64895240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18229}}^1$

素因数の和:18329

約数の個数: 32

約数和(自身を含む): 147663000

約数和(自身を除く): 82767760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 18229, 36458, 72916, 91145, 145832, 182290, 364580, 729160, 1622381, 3244762, 6489524, 8111905, 12979048, 16223810, 32447620, 64895240]

約数ペア:

[(1, 64895240), (2, 32447620), (4, 16223810), (5, 12979048), (8, 8111905), (10, 6489524), (20, 3244762), (40, 1622381), (89, 729160), (178, 364580), (356, 182290), (445, 145832), (712, 91145), (890, 72916), (1780, 36458), (3560, 18229)]