256424910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:522

約数の個数: 128

約数和(自身を含む): 731427840

約数和(自身を除く): 475002930

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 43, 70, 73, 86, 105, 129, 146, 210, 215, 219, 258, 301, 365, 389, 430, 438, 511, 602, 645, 730, 778, 903, 1022, 1095, 1167, 1290, 1505, 1533, 1806, 1945, 2190, 2334, 2555, 2723, 3010, 3066, 3139, 3890, 4515, 5110, 5446, 5835, 6278, 7665, 8169, 9030, 9417, 11670, 13615, 15330, 15695, 16338, 16727, 18834, 21973, 27230, 28397, 31390, 33454, 40845, 43946, 47085, 50181, 56794, 65919, 81690, 83635, 85191, 94170, 100362, 109865, 117089, 131838, 141985, 167270, 170382, 198779, 219730, 234178, 250905, 283970, 329595, 351267, 397558, 425955, 501810, 585445, 596337, 659190, 702534, 851910, 993895, 1170890, 1192674, 1221071, 1756335, 1987790, 2442142, 2981685, 3512670, 3663213, 5963370, 6105355, 7326426, 8547497, 12210710, 17094994, 18316065, 25642491, 36632130, 42737485, 51284982, 85474970, 128212455, 256424910]

約数ペア:

[(1, 256424910), (2, 128212455), (3, 85474970), (5, 51284982), (6, 42737485), (7, 36632130), (10, 25642491), (14, 18316065), (15, 17094994), (21, 12210710), (30, 8547497), (35, 7326426), (42, 6105355), (43, 5963370), (70, 3663213), (73, 3512670), (86, 2981685), (105, 2442142), (129, 1987790), (146, 1756335), (210, 1221071), (215, 1192674), (219, 1170890), (258, 993895), (301, 851910), (365, 702534), (389, 659190), (430, 596337), (438, 585445), (511, 501810), (602, 425955), (645, 397558), (730, 351267), (778, 329595), (903, 283970), (1022, 250905), (1095, 234178), (1167, 219730), (1290, 198779), (1505, 170382), (1533, 167270), (1806, 141985), (1945, 131838), (2190, 117089), (2334, 109865), (2555, 100362), (2723, 94170), (3010, 85191), (3066, 83635), (3139, 81690), (3890, 65919), (4515, 56794), (5110, 50181), (5446, 47085), (5835, 43946), (6278, 40845), (7665, 33454), (8169, 31390), (9030, 28397), (9417, 27230), (11670, 21973), (13615, 18834), (15330, 16727), (15695, 16338)]