15721420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:295

約数の個数: 96

約数和(自身を含む): 40642560

約数和(自身を除く): 24921140

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 23, 26, 44, 46, 52, 55, 65, 92, 110, 115, 130, 143, 220, 230, 239, 253, 260, 286, 299, 460, 478, 506, 572, 598, 715, 956, 1012, 1195, 1196, 1265, 1430, 1495, 2390, 2530, 2629, 2860, 2990, 3107, 3289, 4780, 5060, 5258, 5497, 5980, 6214, 6578, 10516, 10994, 12428, 13145, 13156, 15535, 16445, 21988, 26290, 27485, 31070, 32890, 34177, 52580, 54970, 60467, 62140, 65780, 68354, 71461, 109940, 120934, 136708, 142922, 170885, 241868, 285844, 302335, 341770, 357305, 604670, 683540, 714610, 786071, 1209340, 1429220, 1572142, 3144284, 3930355, 7860710, 15721420]

約数ペア:

[(1, 15721420), (2, 7860710), (4, 3930355), (5, 3144284), (10, 1572142), (11, 1429220), (13, 1209340), (20, 786071), (22, 714610), (23, 683540), (26, 604670), (44, 357305), (46, 341770), (52, 302335), (55, 285844), (65, 241868), (92, 170885), (110, 142922), (115, 136708), (130, 120934), (143, 109940), (220, 71461), (230, 68354), (239, 65780), (253, 62140), (260, 60467), (286, 54970), (299, 52580), (460, 34177), (478, 32890), (506, 31070), (572, 27485), (598, 26290), (715, 21988), (956, 16445), (1012, 15535), (1195, 13156), (1196, 13145), (1265, 12428), (1430, 10994), (1495, 10516), (2390, 6578), (2530, 6214), (2629, 5980), (2860, 5497), (2990, 5258), (3107, 5060), (3289, 4780)]