21359520

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:204

約数の個数: 288

約数和(自身を含む): 90260352

約数和(自身を除く): 68900832

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 28, 30, 32, 35, 36, 39, 40, 42, 45, 48, 52, 56, 60, 63, 65, 70, 72, 78, 80, 84, 90, 91, 96, 104, 105, 112, 117, 120, 126, 130, 140, 144, 156, 160, 163, 168, 180, 182, 195, 208, 210, 224, 234, 240, 252, 260, 273, 280, 288, 312, 315, 326, 336, 360, 364, 390, 416, 420, 455, 468, 480, 489, 504, 520, 546, 560, 585, 624, 630, 652, 672, 720, 728, 780, 815, 819, 840, 910, 936, 978, 1008, 1040, 1092, 1120, 1141, 1170, 1248, 1260, 1304, 1365, 1440, 1456, 1467, 1560, 1630, 1638, 1680, 1820, 1872, 1956, 2016, 2080, 2119, 2184, 2282, 2340, 2445, 2520, 2608, 2730, 2912, 2934, 3120, 3260, 3276, 3360, 3423, 3640, 3744, 3912, 4095, 4238, 4368, 4564, 4680, 4890, 5040, 5216, 5460, 5705, 5868, 6240, 6357, 6520, 6552, 6846, 7280, 7335, 7824, 8190, 8476, 8736, 9128, 9360, 9780, 10080, 10269, 10595, 10920, 11410, 11736, 12714, 13040, 13104, 13692, 14560, 14670, 14833, 15648, 16380, 16952, 17115, 18256, 18720, 19071, 19560, 20538, 21190, 21840, 22820, 23472, 25428, 26080, 26208, 27384, 29340, 29666, 31785, 32760, 33904, 34230, 36512, 38142, 39120, 41076, 42380, 43680, 44499, 45640, 46944, 50856, 51345, 54768, 58680, 59332, 63570, 65520, 67808, 68460, 74165, 76284, 78240, 82152, 84760, 88998, 91280, 95355, 101712, 102690, 109536, 117360, 118664, 127140, 131040, 133497, 136920, 148330, 152568, 164304, 169520, 177996, 182560, 190710, 203424, 205380, 222495, 234720, 237328, 254280, 266994, 273840, 296660, 305136, 328608, 339040, 355992, 381420, 410760, 444990, 474656, 508560, 533988, 547680, 593320, 610272, 667485, 711984, 762840, 821520, 889980, 1017120, 1067976, 1186640, 1334970, 1423968, 1525680, 1643040, 1779960, 2135952, 2373280, 2669940, 3051360, 3559920, 4271904, 5339880, 7119840, 10679760, 21359520]

約数ペア:

[(1, 21359520), (2, 10679760), (3, 7119840), (4, 5339880), (5, 4271904), (6, 3559920), (7, 3051360), (8, 2669940), (9, 2373280), (10, 2135952), (12, 1779960), (13, 1643040), (14, 1525680), (15, 1423968), (16, 1334970), (18, 1186640), (20, 1067976), (21, 1017120), (24, 889980), (26, 821520), (28, 762840), (30, 711984), (32, 667485), (35, 610272), (36, 593320), (39, 547680), (40, 533988), (42, 508560), (45, 474656), (48, 444990), (52, 410760), (56, 381420), (60, 355992), (63, 339040), (65, 328608), (70, 305136), (72, 296660), (78, 273840), (80, 266994), (84, 254280), (90, 237328), (91, 234720), (96, 222495), (104, 205380), (105, 203424), (112, 190710), (117, 182560), (120, 177996), (126, 169520), (130, 164304), (140, 152568), (144, 148330), (156, 136920), (160, 133497), (163, 131040), (168, 127140), (180, 118664), (182, 117360), (195, 109536), (208, 102690), (210, 101712), (224, 95355), (234, 91280), (240, 88998), (252, 84760), (260, 82152), (273, 78240), (280, 76284), (288, 74165), (312, 68460), (315, 67808), (326, 65520), (336, 63570), (360, 59332), (364, 58680), (390, 54768), (416, 51345), (420, 50856), (455, 46944), (468, 45640), (480, 44499), (489, 43680), (504, 42380), (520, 41076), (546, 39120), (560, 38142), (585, 36512), (624, 34230), (630, 33904), (652, 32760), (672, 31785), (720, 29666), (728, 29340), (780, 27384), (815, 26208), (819, 26080), (840, 25428), (910, 23472), (936, 22820), (978, 21840), (1008, 21190), (1040, 20538), (1092, 19560), (1120, 19071), (1141, 18720), (1170, 18256), (1248, 17115), (1260, 16952), (1304, 16380), (1365, 15648), (1440, 14833), (1456, 14670), (1467, 14560), (1560, 13692), (1630, 13104), (1638, 13040), (1680, 12714), (1820, 11736), (1872, 11410), (1956, 10920), (2016, 10595), (2080, 10269), (2119, 10080), (2184, 9780), (2282, 9360), (2340, 9128), (2445, 8736), (2520, 8476), (2608, 8190), (2730, 7824), (2912, 7335), (2934, 7280), (3120, 6846), (3260, 6552), (3276, 6520), (3360, 6357), (3423, 6240), (3640, 5868), (3744, 5705), (3912, 5460), (4095, 5216), (4238, 5040), (4368, 4890), (4564, 4680)]