18981612

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{40559}}^1$

素因数の和:40582

約数の個数: 36

約数和(自身を含む): 51673440

約数和(自身を除く): 32691828

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 40559, 81118, 121677, 162236, 243354, 365031, 486708, 527267, 730062, 1054534, 1460124, 1581801, 2109068, 3163602, 4745403, 6327204, 9490806, 18981612]

約数ペア:

[(1, 18981612), (2, 9490806), (3, 6327204), (4, 4745403), (6, 3163602), (9, 2109068), (12, 1581801), (13, 1460124), (18, 1054534), (26, 730062), (36, 527267), (39, 486708), (52, 365031), (78, 243354), (117, 162236), (156, 121677), (234, 81118), (468, 40559)]