68989240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{19379}}^1$

素因数の和:19479

約数の個数: 32

約数和(自身を含む): 156978000

約数和(自身を除く): 87988760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 19379, 38758, 77516, 96895, 155032, 193790, 387580, 775160, 1724731, 3449462, 6898924, 8623655, 13797848, 17247310, 34494620, 68989240]

約数ペア:

[(1, 68989240), (2, 34494620), (4, 17247310), (5, 13797848), (8, 8623655), (10, 6898924), (20, 3449462), (40, 1724731), (89, 775160), (178, 387580), (356, 193790), (445, 155032), (712, 96895), (890, 77516), (1780, 38758), (3560, 19379)]