64539740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78707}}^1$

素因数の和:78757

約数の個数: 24

約数和(自身を含む): 138840912

約数和(自身を除く): 74301172

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 78707, 157414, 314828, 393535, 787070, 1574140, 3226987, 6453974, 12907948, 16134935, 32269870, 64539740]

約数ペア:

[(1, 64539740), (2, 32269870), (4, 16134935), (5, 12907948), (10, 6453974), (20, 3226987), (41, 1574140), (82, 787070), (164, 393535), (205, 314828), (410, 157414), (820, 78707)]