1287900640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{26921}}^1$

素因数の和:26972

約数の個数: 96

約数和(自身を含む): 3419309376

約数和(自身を除く): 2131408736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 65, 80, 92, 104, 115, 130, 160, 184, 208, 230, 260, 299, 368, 416, 460, 520, 598, 736, 920, 1040, 1196, 1495, 1840, 2080, 2392, 2990, 3680, 4784, 5980, 9568, 11960, 23920, 26921, 47840, 53842, 107684, 134605, 215368, 269210, 349973, 430736, 538420, 619183, 699946, 861472, 1076840, 1238366, 1399892, 1749865, 2153680, 2476732, 2799784, 3095915, 3499730, 4307360, 4953464, 5599568, 6191830, 6999460, 8049379, 9906928, 11199136, 12383660, 13998920, 16098758, 19813856, 24767320, 27997840, 32197516, 40246895, 49534640, 55995680, 64395032, 80493790, 99069280, 128790064, 160987580, 257580128, 321975160, 643950320, 1287900640]

約数ペア:

[(1, 1287900640), (2, 643950320), (4, 321975160), (5, 257580128), (8, 160987580), (10, 128790064), (13, 99069280), (16, 80493790), (20, 64395032), (23, 55995680), (26, 49534640), (32, 40246895), (40, 32197516), (46, 27997840), (52, 24767320), (65, 19813856), (80, 16098758), (92, 13998920), (104, 12383660), (115, 11199136), (130, 9906928), (160, 8049379), (184, 6999460), (208, 6191830), (230, 5599568), (260, 4953464), (299, 4307360), (368, 3499730), (416, 3095915), (460, 2799784), (520, 2476732), (598, 2153680), (736, 1749865), (920, 1399892), (1040, 1238366), (1196, 1076840), (1495, 861472), (1840, 699946), (2080, 619183), (2392, 538420), (2990, 430736), (3680, 349973), (4784, 269210), (5980, 215368), (9568, 134605), (11960, 107684), (23920, 53842), (26921, 47840)]