67639340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{82487}}^1$

素因数の和:82537

約数の個数: 24

約数和(自身を含む): 145508832

約数和(自身を除く): 77869492

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 82487, 164974, 329948, 412435, 824870, 1649740, 3381967, 6763934, 13527868, 16909835, 33819670, 67639340]

約数ペア:

[(1, 67639340), (2, 33819670), (4, 16909835), (5, 13527868), (10, 6763934), (20, 3381967), (41, 1649740), (82, 824870), (164, 412435), (205, 329948), (410, 164974), (820, 82487)]