78993280

素因数分解:

$2^7\times 5^1\times {\mathrm{123427}}^1$

素因数の和:123446

約数の個数: 32

約数和(自身を含む): 188844840

約数和(自身を除く): 109851560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123427, 246854, 493708, 617135, 987416, 1234270, 1974832, 2468540, 3949664, 4937080, 7899328, 9874160, 15798656, 19748320, 39496640, 78993280]

約数ペア:

[(1, 78993280), (2, 39496640), (4, 19748320), (5, 15798656), (8, 9874160), (10, 7899328), (16, 4937080), (20, 3949664), (32, 2468540), (40, 1974832), (64, 1234270), (80, 987416), (128, 617135), (160, 493708), (320, 246854), (640, 123427)]