64456780

素因数分解:

$2^2\times 5^1\times {\mathrm{1669}}^1\times {\mathrm{1931}}^1$

素因数の和:3609

約数の個数: 24

約数和(自身を含む): 135510480

約数和(自身を除く): 71053700

約数列:

[1, 2, 4, 5, 10, 20, 1669, 1931, 3338, 3862, 6676, 7724, 8345, 9655, 16690, 19310, 33380, 38620, 3222839, 6445678, 12891356, 16114195, 32228390, 64456780]

約数ペア:

[(1, 64456780), (2, 32228390), (4, 16114195), (5, 12891356), (10, 6445678), (20, 3222839), (1669, 38620), (1931, 33380), (3338, 19310), (3862, 16690), (6676, 9655), (7724, 8345)]