21976360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78487}}^1$

素因数の和:78505

約数の個数: 32

約数和(自身を含む): 56511360

約数和(自身を除く): 34535000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78487, 156974, 313948, 392435, 549409, 627896, 784870, 1098818, 1569740, 2197636, 2747045, 3139480, 4395272, 5494090, 10988180, 21976360]

約数ペア:

[(1, 21976360), (2, 10988180), (4, 5494090), (5, 4395272), (7, 3139480), (8, 2747045), (10, 2197636), (14, 1569740), (20, 1098818), (28, 784870), (35, 627896), (40, 549409), (56, 392435), (70, 313948), (140, 156974), (280, 78487)]