64627840

素因数分解:

$2^7\times 5^1\times {\mathrm{100981}}^1$

素因数の和:101000

約数の個数: 32

約数和(自身を含む): 154502460

約数和(自身を除く): 89874620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 100981, 201962, 403924, 504905, 807848, 1009810, 1615696, 2019620, 3231392, 4039240, 6462784, 8078480, 12925568, 16156960, 32313920, 64627840]

約数ペア:

[(1, 64627840), (2, 32313920), (4, 16156960), (5, 12925568), (8, 8078480), (10, 6462784), (16, 4039240), (20, 3231392), (32, 2019620), (40, 1615696), (64, 1009810), (80, 807848), (128, 504905), (160, 403924), (320, 201962), (640, 100981)]