12971920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12473}}^1$

素因数の和:12499

約数の個数: 40

約数和(自身を含む): 32482296

約数和(自身を除く): 19510376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 12473, 24946, 49892, 62365, 99784, 124730, 162149, 199568, 249460, 324298, 498920, 648596, 810745, 997840, 1297192, 1621490, 2594384, 3242980, 6485960, 12971920]

約数ペア:

[(1, 12971920), (2, 6485960), (4, 3242980), (5, 2594384), (8, 1621490), (10, 1297192), (13, 997840), (16, 810745), (20, 648596), (26, 498920), (40, 324298), (52, 249460), (65, 199568), (80, 162149), (104, 124730), (130, 99784), (208, 62365), (260, 49892), (520, 24946), (1040, 12473)]