21804235

素因数分解:

$5^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 26661600

約数和(自身を除く): 4857365

約数列:

[1, 5, 137, 139, 229, 685, 695, 1145, 19043, 31373, 31831, 95215, 156865, 159155, 4360847, 21804235]

約数ペア:

[(1, 21804235), (5, 4360847), (137, 159155), (139, 156865), (229, 95215), (685, 31831), (695, 31373), (1145, 19043)]