645440

素因数分解:

$2^6\times 5^1\times {\mathrm{2017}}^1$

素因数の和:2034

約数の個数: 28

約数和(自身を含む): 1537716

約数和(自身を除く): 892276

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2017, 4034, 8068, 10085, 16136, 20170, 32272, 40340, 64544, 80680, 129088, 161360, 322720, 645440]

約数ペア:

[(1, 645440), (2, 322720), (4, 161360), (5, 129088), (8, 80680), (10, 64544), (16, 40340), (20, 32272), (32, 20170), (40, 16136), (64, 10085), (80, 8068), (160, 4034), (320, 2017)]