21704895

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3739}}^1$

素因数の和:3796

約数の個数: 32

約数和(自身を含む): 39494400

約数和(自身を除く): 17789505

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3739, 5805, 11217, 18695, 33651, 56085, 100953, 160777, 168255, 482331, 504765, 803885, 1446993, 2411655, 4340979, 7234965, 21704895]

約数ペア:

[(1, 21704895), (3, 7234965), (5, 4340979), (9, 2411655), (15, 1446993), (27, 803885), (43, 504765), (45, 482331), (129, 168255), (135, 160777), (215, 100953), (387, 56085), (645, 33651), (1161, 18695), (1935, 11217), (3739, 5805)]