1271920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1223}}^1$

素因数の和:1249

約数の個数: 40

約数和(自身を含む): 3187296

約数和(自身を除く): 1915376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1223, 2446, 4892, 6115, 9784, 12230, 15899, 19568, 24460, 31798, 48920, 63596, 79495, 97840, 127192, 158990, 254384, 317980, 635960, 1271920]

約数ペア:

[(1, 1271920), (2, 635960), (4, 317980), (5, 254384), (8, 158990), (10, 127192), (13, 97840), (16, 79495), (20, 63596), (26, 48920), (40, 31798), (52, 24460), (65, 19568), (80, 15899), (104, 12230), (130, 9784), (208, 6115), (260, 4892), (520, 2446), (1040, 1223)]