209945740

素因数分解:

$2^2\times 5^1\times {\mathrm{797}}^1\times {\mathrm{13171}}^1$

素因数の和:13977

約数の個数: 24

約数和(自身を含む): 441472752

約数和(自身を除く): 231527012

約数列:

[1, 2, 4, 5, 10, 20, 797, 1594, 3188, 3985, 7970, 13171, 15940, 26342, 52684, 65855, 131710, 263420, 10497287, 20994574, 41989148, 52486435, 104972870, 209945740]

約数ペア:

[(1, 209945740), (2, 104972870), (4, 52486435), (5, 41989148), (10, 20994574), (20, 10497287), (797, 263420), (1594, 131710), (3188, 65855), (3985, 52684), (7970, 26342), (13171, 15940)]