21685475

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4273}}^1$

素因数の和:4319

約数の個数: 24

約数和(自身を含む): 31798560

約数和(自身を除く): 10113085

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 4273, 5075, 21365, 29911, 106825, 123917, 149555, 619585, 747775, 867419, 3097925, 4337095, 21685475]

約数ペア:

[(1, 21685475), (5, 4337095), (7, 3097925), (25, 867419), (29, 747775), (35, 619585), (145, 149555), (175, 123917), (203, 106825), (725, 29911), (1015, 21365), (4273, 5075)]