20502625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:107

約数の個数: 64

約数和(自身を含む): 31868928

約数和(自身を除く): 11366303

約数列:

[1, 5, 11, 13, 25, 31, 37, 55, 65, 125, 143, 155, 185, 275, 325, 341, 403, 407, 481, 715, 775, 925, 1147, 1375, 1625, 1705, 2015, 2035, 2405, 3575, 3875, 4433, 4625, 5291, 5735, 8525, 10075, 10175, 12025, 12617, 14911, 17875, 22165, 26455, 28675, 42625, 50375, 50875, 60125, 63085, 74555, 110825, 132275, 143375, 164021, 315425, 372775, 554125, 661375, 820105, 1577125, 1863875, 4100525, 20502625]

約数ペア:

[(1, 20502625), (5, 4100525), (11, 1863875), (13, 1577125), (25, 820105), (31, 661375), (37, 554125), (55, 372775), (65, 315425), (125, 164021), (143, 143375), (155, 132275), (185, 110825), (275, 74555), (325, 63085), (341, 60125), (403, 50875), (407, 50375), (481, 42625), (715, 28675), (775, 26455), (925, 22165), (1147, 17875), (1375, 14911), (1625, 12617), (1705, 12025), (2015, 10175), (2035, 10075), (2405, 8525), (3575, 5735), (3875, 5291), (4433, 4625)]