64215220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23099}}^1$

素因数の和:23247

約数の個数: 24

約数和(自身を含む): 135828000

約数和(自身を除く): 71612780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 23099, 46198, 92396, 115495, 230990, 461980, 3210761, 6421522, 12843044, 16053805, 32107610, 64215220]

約数ペア:

[(1, 64215220), (2, 32107610), (4, 16053805), (5, 12843044), (10, 6421522), (20, 3210761), (139, 461980), (278, 230990), (556, 115495), (695, 92396), (1390, 46198), (2780, 23099)]