388536920

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{24223}}^1$

素因数の和:24635

約数の個数: 32

約数和(自身を含む): 876424320

約数和(自身を除く): 487887400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 16040, 24223, 48446, 96892, 121115, 193784, 242230, 484460, 968920, 9713423, 19426846, 38853692, 48567115, 77707384, 97134230, 194268460, 388536920]

約数ペア:

[(1, 388536920), (2, 194268460), (4, 97134230), (5, 77707384), (8, 48567115), (10, 38853692), (20, 19426846), (40, 9713423), (401, 968920), (802, 484460), (1604, 242230), (2005, 193784), (3208, 121115), (4010, 96892), (8020, 48446), (16040, 24223)]