1621916080

素因数分解:

$2^4\times 5^1\times {\mathrm{20273951}}^1$

素因数の和:20273964

約数の個数: 20

約数和(自身を含む): 3770955072

約数和(自身を除く): 2149038992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20273951, 40547902, 81095804, 101369755, 162191608, 202739510, 324383216, 405479020, 810958040, 1621916080]

約数ペア:

[(1, 1621916080), (2, 810958040), (4, 405479020), (5, 324383216), (8, 202739510), (10, 162191608), (16, 101369755), (20, 81095804), (40, 40547902), (80, 20273951)]