18977751

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8537}}^1$

素因数の和:8575

約数の個数: 24

約数和(自身を含む): 31078320

約数和(自身を除く): 12100569

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 8537, 25611, 76833, 110981, 162203, 332943, 486609, 998829, 1459827, 2108639, 6325917, 18977751]

約数ペア:

[(1, 18977751), (3, 6325917), (9, 2108639), (13, 1459827), (19, 998829), (39, 486609), (57, 332943), (117, 162203), (171, 110981), (247, 76833), (741, 25611), (2223, 8537)]