20170880

素因数分解:

$2^7\times 5^1\times {\mathrm{31517}}^1$

素因数の和:31536

約数の個数: 32

約数和(自身を含む): 48222540

約数和(自身を除く): 28051660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31517, 63034, 126068, 157585, 252136, 315170, 504272, 630340, 1008544, 1260680, 2017088, 2521360, 4034176, 5042720, 10085440, 20170880]

約数ペア:

[(1, 20170880), (2, 10085440), (4, 5042720), (5, 4034176), (8, 2521360), (10, 2017088), (16, 1260680), (20, 1008544), (32, 630340), (40, 504272), (64, 315170), (80, 252136), (128, 157585), (160, 126068), (320, 63034), (640, 31517)]