21701025

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2243}}^1$

素因数の和:2302

約数の個数: 36

約数和(自身を含む): 39790608

約数和(自身を除く): 18089583

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2243, 3225, 6729, 9675, 11215, 20187, 33645, 56075, 96449, 100935, 168225, 289347, 482245, 504675, 868041, 1446735, 2411225, 4340205, 7233675, 21701025]

約数ペア:

[(1, 21701025), (3, 7233675), (5, 4340205), (9, 2411225), (15, 1446735), (25, 868041), (43, 504675), (45, 482245), (75, 289347), (129, 168225), (215, 100935), (225, 96449), (387, 56075), (645, 33645), (1075, 20187), (1935, 11215), (2243, 9675), (3225, 6729)]