201720925

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{2179}}^1$

素因数の和:2242

約数の個数: 36

約数和(自身を含む): 298973920

約数和(自身を除く): 97252995

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 529, 575, 805, 2179, 2645, 3703, 4025, 10895, 13225, 15253, 18515, 50117, 54475, 76265, 92575, 250585, 350819, 381325, 1152691, 1252925, 1754095, 5763455, 8068837, 8770475, 28817275, 40344185, 201720925]

約数ペア:

[(1, 201720925), (5, 40344185), (7, 28817275), (23, 8770475), (25, 8068837), (35, 5763455), (115, 1754095), (161, 1252925), (175, 1152691), (529, 381325), (575, 350819), (805, 250585), (2179, 92575), (2645, 76265), (3703, 54475), (4025, 50117), (10895, 18515), (13225, 15253)]