64870240

素因数分解:

$2^5\times 5^1\times {\mathrm{405439}}^1$

素因数の和:405454

約数の個数: 24

約数和(自身を含む): 153256320

約数和(自身を除く): 88386080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 405439, 810878, 1621756, 2027195, 3243512, 4054390, 6487024, 8108780, 12974048, 16217560, 32435120, 64870240]

約数ペア:

[(1, 64870240), (2, 32435120), (4, 16217560), (5, 12974048), (8, 8108780), (10, 6487024), (16, 4054390), (20, 3243512), (32, 2027195), (40, 1621756), (80, 810878), (160, 405439)]