68286640

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2087}}^1$

素因数の和:2509

約数の個数: 40

約数和(自身を含む): 159230880

約数和(自身を除く): 90944240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 2087, 3272, 4090, 4174, 6544, 8180, 8348, 10435, 16360, 16696, 20870, 32720, 33392, 41740, 83480, 166960, 853583, 1707166, 3414332, 4267915, 6828664, 8535830, 13657328, 17071660, 34143320, 68286640]

約数ペア:

[(1, 68286640), (2, 34143320), (4, 17071660), (5, 13657328), (8, 8535830), (10, 6828664), (16, 4267915), (20, 3414332), (40, 1707166), (80, 853583), (409, 166960), (818, 83480), (1636, 41740), (2045, 33392), (2087, 32720), (3272, 20870), (4090, 16696), (4174, 16360), (6544, 10435), (8180, 8348)]