398469425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{28927}}^1$

素因数の和:28985

約数の個数: 24

約数和(自身を含む): 538060800

約数和(自身を除く): 139591375

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 2755, 13775, 28927, 144635, 549613, 723175, 838883, 2748065, 4194415, 13740325, 15938777, 20972075, 79693885, 398469425]

約数ペア:

[(1, 398469425), (5, 79693885), (19, 20972075), (25, 15938777), (29, 13740325), (95, 4194415), (145, 2748065), (475, 838883), (551, 723175), (725, 549613), (2755, 144635), (13775, 28927)]