19881558

素因数分解:

$2^1\times 3^3\times {\mathrm{557}}^1\times {\mathrm{661}}^1$

素因数の和:1229

約数の個数: 32

約数和(自身を含む): 44327520

約数和(自身を除く): 24445962

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 557, 661, 1114, 1322, 1671, 1983, 3342, 3966, 5013, 5949, 10026, 11898, 15039, 17847, 30078, 35694, 368177, 736354, 1104531, 2209062, 3313593, 6627186, 9940779, 19881558]

約数ペア:

[(1, 19881558), (2, 9940779), (3, 6627186), (6, 3313593), (9, 2209062), (18, 1104531), (27, 736354), (54, 368177), (557, 35694), (661, 30078), (1114, 17847), (1322, 15039), (1671, 11898), (1983, 10026), (3342, 5949), (3966, 5013)]