1287362440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{15377}}^1$

素因数の和:15431

約数の個数: 128

約数和(自身を含む): 3720245760

約数和(自身を除く): 2432883320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 26, 28, 35, 40, 46, 52, 56, 65, 70, 91, 92, 104, 115, 130, 140, 161, 182, 184, 230, 260, 280, 299, 322, 364, 455, 460, 520, 598, 644, 728, 805, 910, 920, 1196, 1288, 1495, 1610, 1820, 2093, 2392, 2990, 3220, 3640, 4186, 5980, 6440, 8372, 10465, 11960, 15377, 16744, 20930, 30754, 41860, 61508, 76885, 83720, 107639, 123016, 153770, 199901, 215278, 307540, 353671, 399802, 430556, 538195, 615080, 707342, 799604, 861112, 999505, 1076390, 1399307, 1414684, 1599208, 1768355, 1999010, 2152780, 2475697, 2798614, 2829368, 3536710, 3998020, 4305560, 4597723, 4951394, 5597228, 6996535, 7073420, 7996040, 9195446, 9902788, 11194456, 12378485, 13993070, 14146840, 18390892, 19805576, 22988615, 24756970, 27986140, 32184061, 36781784, 45977230, 49513940, 55972280, 64368122, 91954460, 99027880, 128736244, 160920305, 183908920, 257472488, 321840610, 643681220, 1287362440]

約数ペア:

[(1, 1287362440), (2, 643681220), (4, 321840610), (5, 257472488), (7, 183908920), (8, 160920305), (10, 128736244), (13, 99027880), (14, 91954460), (20, 64368122), (23, 55972280), (26, 49513940), (28, 45977230), (35, 36781784), (40, 32184061), (46, 27986140), (52, 24756970), (56, 22988615), (65, 19805576), (70, 18390892), (91, 14146840), (92, 13993070), (104, 12378485), (115, 11194456), (130, 9902788), (140, 9195446), (161, 7996040), (182, 7073420), (184, 6996535), (230, 5597228), (260, 4951394), (280, 4597723), (299, 4305560), (322, 3998020), (364, 3536710), (455, 2829368), (460, 2798614), (520, 2475697), (598, 2152780), (644, 1999010), (728, 1768355), (805, 1599208), (910, 1414684), (920, 1399307), (1196, 1076390), (1288, 999505), (1495, 861112), (1610, 799604), (1820, 707342), (2093, 615080), (2392, 538195), (2990, 430556), (3220, 399802), (3640, 353671), (4186, 307540), (5980, 215278), (6440, 199901), (8372, 153770), (10465, 123016), (11960, 107639), (15377, 83720), (16744, 76885), (20930, 61508), (30754, 41860)]