20555505

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3541}}^1$

素因数の和:3598

約数の個数: 32

約数和(自身を含む): 37403520

約数和(自身を除く): 16848015

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3541, 5805, 10623, 17705, 31869, 53115, 95607, 152263, 159345, 456789, 478035, 761315, 1370367, 2283945, 4111101, 6851835, 20555505]

約数ペア:

[(1, 20555505), (3, 6851835), (5, 4111101), (9, 2283945), (15, 1370367), (27, 761315), (43, 478035), (45, 456789), (129, 159345), (135, 152263), (215, 95607), (387, 53115), (645, 31869), (1161, 17705), (1935, 10623), (3541, 5805)]