21207475

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:375

約数の個数: 24

約数和(自身を含む): 27395568

約数和(自身を除く): 6188093

約数列:

[1, 5, 25, 37, 101, 185, 227, 505, 925, 1135, 2525, 3737, 5675, 8399, 18685, 22927, 41995, 93425, 114635, 209975, 573175, 848299, 4241495, 21207475]

約数ペア:

[(1, 21207475), (5, 4241495), (25, 848299), (37, 573175), (101, 209975), (185, 114635), (227, 93425), (505, 41995), (925, 22927), (1135, 18685), (2525, 8399), (3737, 5675)]