20398560

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{467}}^1$

素因数の和:505

約数の個数: 192

約数和(自身を含む): 79252992

約数和(自身を除く): 58854432

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 32, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 96, 104, 105, 112, 120, 130, 140, 156, 160, 168, 182, 195, 208, 210, 224, 240, 260, 273, 280, 312, 336, 364, 390, 416, 420, 455, 467, 480, 520, 546, 560, 624, 672, 728, 780, 840, 910, 934, 1040, 1092, 1120, 1248, 1365, 1401, 1456, 1560, 1680, 1820, 1868, 2080, 2184, 2335, 2730, 2802, 2912, 3120, 3269, 3360, 3640, 3736, 4368, 4670, 5460, 5604, 6071, 6240, 6538, 7005, 7280, 7472, 8736, 9340, 9807, 10920, 11208, 12142, 13076, 14010, 14560, 14944, 16345, 18213, 18680, 19614, 21840, 22416, 24284, 26152, 28020, 30355, 32690, 36426, 37360, 39228, 42497, 43680, 44832, 48568, 49035, 52304, 56040, 60710, 65380, 72852, 74720, 78456, 84994, 91065, 97136, 98070, 104608, 112080, 121420, 127491, 130760, 145704, 156912, 169988, 182130, 194272, 196140, 212485, 224160, 242840, 254982, 261520, 291408, 313824, 339976, 364260, 392280, 424970, 485680, 509964, 523040, 582816, 637455, 679952, 728520, 784560, 849940, 971360, 1019928, 1274910, 1359904, 1457040, 1569120, 1699880, 2039856, 2549820, 2914080, 3399760, 4079712, 5099640, 6799520, 10199280, 20398560]

約数ペア:

[(1, 20398560), (2, 10199280), (3, 6799520), (4, 5099640), (5, 4079712), (6, 3399760), (7, 2914080), (8, 2549820), (10, 2039856), (12, 1699880), (13, 1569120), (14, 1457040), (15, 1359904), (16, 1274910), (20, 1019928), (21, 971360), (24, 849940), (26, 784560), (28, 728520), (30, 679952), (32, 637455), (35, 582816), (39, 523040), (40, 509964), (42, 485680), (48, 424970), (52, 392280), (56, 364260), (60, 339976), (65, 313824), (70, 291408), (78, 261520), (80, 254982), (84, 242840), (91, 224160), (96, 212485), (104, 196140), (105, 194272), (112, 182130), (120, 169988), (130, 156912), (140, 145704), (156, 130760), (160, 127491), (168, 121420), (182, 112080), (195, 104608), (208, 98070), (210, 97136), (224, 91065), (240, 84994), (260, 78456), (273, 74720), (280, 72852), (312, 65380), (336, 60710), (364, 56040), (390, 52304), (416, 49035), (420, 48568), (455, 44832), (467, 43680), (480, 42497), (520, 39228), (546, 37360), (560, 36426), (624, 32690), (672, 30355), (728, 28020), (780, 26152), (840, 24284), (910, 22416), (934, 21840), (1040, 19614), (1092, 18680), (1120, 18213), (1248, 16345), (1365, 14944), (1401, 14560), (1456, 14010), (1560, 13076), (1680, 12142), (1820, 11208), (1868, 10920), (2080, 9807), (2184, 9340), (2335, 8736), (2730, 7472), (2802, 7280), (2912, 7005), (3120, 6538), (3269, 6240), (3360, 6071), (3640, 5604), (3736, 5460), (4368, 4670)]