20664765

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 39536640

約数和(自身を除く): 18871875

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 109, 165, 327, 383, 495, 545, 981, 1149, 1199, 1635, 1915, 3447, 3597, 4213, 4905, 5745, 5995, 10791, 12639, 17235, 17985, 21065, 37917, 41747, 53955, 63195, 125241, 189585, 208735, 375723, 459217, 626205, 1377651, 1878615, 2296085, 4132953, 6888255, 20664765]

約数ペア:

[(1, 20664765), (3, 6888255), (5, 4132953), (9, 2296085), (11, 1878615), (15, 1377651), (33, 626205), (45, 459217), (55, 375723), (99, 208735), (109, 189585), (165, 125241), (327, 63195), (383, 53955), (495, 41747), (545, 37917), (981, 21065), (1149, 17985), (1199, 17235), (1635, 12639), (1915, 10791), (3447, 5995), (3597, 5745), (4213, 4905)]