206990860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{1129}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 444225600

約数和(自身を除く): 237234740

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 178, 206, 356, 412, 445, 515, 890, 1030, 1129, 1780, 2060, 2258, 4516, 5645, 9167, 11290, 18334, 22580, 36668, 45835, 91670, 100481, 116287, 183340, 200962, 232574, 401924, 465148, 502405, 581435, 1004810, 1162870, 2009620, 2325740, 10349543, 20699086, 41398172, 51747715, 103495430, 206990860]

約数ペア:

[(1, 206990860), (2, 103495430), (4, 51747715), (5, 41398172), (10, 20699086), (20, 10349543), (89, 2325740), (103, 2009620), (178, 1162870), (206, 1004810), (356, 581435), (412, 502405), (445, 465148), (515, 401924), (890, 232574), (1030, 200962), (1129, 183340), (1780, 116287), (2060, 100481), (2258, 91670), (4516, 45835), (5645, 36668), (9167, 22580), (11290, 18334)]