66361780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{80929}}^1$

素因数の和:80979

約数の個数: 24

約数和(自身を含む): 142760520

約数和(自身を除く): 76398740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 80929, 161858, 323716, 404645, 809290, 1618580, 3318089, 6636178, 13272356, 16590445, 33180890, 66361780]

約数ペア:

[(1, 66361780), (2, 33180890), (4, 16590445), (5, 13272356), (10, 6636178), (20, 3318089), (41, 1618580), (82, 809290), (164, 404645), (205, 323716), (410, 161858), (820, 80929)]