28987920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:214

約数の個数: 240

約数和(自身を含む): 111034560

約数和(自身を除く): 82046640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 36, 38, 39, 40, 45, 48, 52, 57, 60, 65, 72, 76, 78, 80, 90, 95, 104, 114, 117, 120, 130, 144, 152, 156, 163, 171, 180, 190, 195, 208, 228, 234, 240, 247, 260, 285, 304, 312, 326, 342, 360, 380, 390, 456, 468, 489, 494, 520, 570, 585, 624, 652, 684, 720, 741, 760, 780, 815, 855, 912, 936, 978, 988, 1040, 1140, 1170, 1235, 1304, 1368, 1467, 1482, 1520, 1560, 1630, 1710, 1872, 1956, 1976, 2119, 2223, 2280, 2340, 2445, 2470, 2608, 2736, 2934, 2964, 3097, 3120, 3260, 3420, 3705, 3912, 3952, 4238, 4446, 4560, 4680, 4890, 4940, 5868, 5928, 6194, 6357, 6520, 6840, 7335, 7410, 7824, 8476, 8892, 9291, 9360, 9780, 9880, 10595, 11115, 11736, 11856, 12388, 12714, 13040, 13680, 14670, 14820, 15485, 16952, 17784, 18582, 19071, 19560, 19760, 21190, 22230, 23472, 24776, 25428, 27873, 29340, 29640, 30970, 31785, 33904, 35568, 37164, 38142, 39120, 40261, 42380, 44460, 46455, 49552, 50856, 55746, 58680, 59280, 61940, 63570, 74328, 76284, 80522, 84760, 88920, 92910, 95355, 101712, 111492, 117360, 120783, 123880, 127140, 139365, 148656, 152568, 161044, 169520, 177840, 185820, 190710, 201305, 222984, 241566, 247760, 254280, 278730, 305136, 322088, 362349, 371640, 381420, 402610, 445968, 483132, 508560, 557460, 603915, 644176, 724698, 743280, 762840, 805220, 966264, 1114920, 1207830, 1449396, 1525680, 1610440, 1811745, 1932528, 2229840, 2415660, 2898792, 3220880, 3623490, 4831320, 5797584, 7246980, 9662640, 14493960, 28987920]

約数ペア:

[(1, 28987920), (2, 14493960), (3, 9662640), (4, 7246980), (5, 5797584), (6, 4831320), (8, 3623490), (9, 3220880), (10, 2898792), (12, 2415660), (13, 2229840), (15, 1932528), (16, 1811745), (18, 1610440), (19, 1525680), (20, 1449396), (24, 1207830), (26, 1114920), (30, 966264), (36, 805220), (38, 762840), (39, 743280), (40, 724698), (45, 644176), (48, 603915), (52, 557460), (57, 508560), (60, 483132), (65, 445968), (72, 402610), (76, 381420), (78, 371640), (80, 362349), (90, 322088), (95, 305136), (104, 278730), (114, 254280), (117, 247760), (120, 241566), (130, 222984), (144, 201305), (152, 190710), (156, 185820), (163, 177840), (171, 169520), (180, 161044), (190, 152568), (195, 148656), (208, 139365), (228, 127140), (234, 123880), (240, 120783), (247, 117360), (260, 111492), (285, 101712), (304, 95355), (312, 92910), (326, 88920), (342, 84760), (360, 80522), (380, 76284), (390, 74328), (456, 63570), (468, 61940), (489, 59280), (494, 58680), (520, 55746), (570, 50856), (585, 49552), (624, 46455), (652, 44460), (684, 42380), (720, 40261), (741, 39120), (760, 38142), (780, 37164), (815, 35568), (855, 33904), (912, 31785), (936, 30970), (978, 29640), (988, 29340), (1040, 27873), (1140, 25428), (1170, 24776), (1235, 23472), (1304, 22230), (1368, 21190), (1467, 19760), (1482, 19560), (1520, 19071), (1560, 18582), (1630, 17784), (1710, 16952), (1872, 15485), (1956, 14820), (1976, 14670), (2119, 13680), (2223, 13040), (2280, 12714), (2340, 12388), (2445, 11856), (2470, 11736), (2608, 11115), (2736, 10595), (2934, 9880), (2964, 9780), (3097, 9360), (3120, 9291), (3260, 8892), (3420, 8476), (3705, 7824), (3912, 7410), (3952, 7335), (4238, 6840), (4446, 6520), (4560, 6357), (4680, 6194), (4890, 5928), (4940, 5868)]