64901780

素因数分解:

$2^2\times 5^1\times {\mathrm{823}}^1\times {\mathrm{3943}}^1$

素因数の和:4775

約数の個数: 24

約数和(自身を含む): 136493952

約数和(自身を除く): 71592172

約数列:

[1, 2, 4, 5, 10, 20, 823, 1646, 3292, 3943, 4115, 7886, 8230, 15772, 16460, 19715, 39430, 78860, 3245089, 6490178, 12980356, 16225445, 32450890, 64901780]

約数ペア:

[(1, 64901780), (2, 32450890), (4, 16225445), (5, 12980356), (10, 6490178), (20, 3245089), (823, 78860), (1646, 39430), (3292, 19715), (3943, 16460), (4115, 15772), (7886, 8230)]