20996685

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3617}}^1$

素因数の和:3674

約数の個数: 32

約数和(自身を含む): 38206080

約数和(自身を除く): 17209395

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3617, 5805, 10851, 18085, 32553, 54255, 97659, 155531, 162765, 466593, 488295, 777655, 1399779, 2332965, 4199337, 6998895, 20996685]

約数ペア:

[(1, 20996685), (3, 6998895), (5, 4199337), (9, 2332965), (15, 1399779), (27, 777655), (43, 488295), (45, 466593), (129, 162765), (135, 155531), (215, 97659), (387, 54255), (645, 32553), (1161, 18085), (1935, 10851), (3617, 5805)]