64745840

素因数分解:

$2^4\times 5^1\times {\mathrm{809323}}^1$

素因数の和:809336

約数の個数: 20

約数和(自身を含む): 150534264

約数和(自身を除く): 85788424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809323, 1618646, 3237292, 4046615, 6474584, 8093230, 12949168, 16186460, 32372920, 64745840]

約数ペア:

[(1, 64745840), (2, 32372920), (4, 16186460), (5, 12949168), (8, 8093230), (10, 6474584), (16, 4046615), (20, 3237292), (40, 1618646), (80, 809323)]