20872858

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{5519}}^1$

素因数の和:5613

約数の個数: 16

約数和(自身を含む): 32855040

約数和(自身を除く): 11982182

約数列:

[1, 2, 31, 61, 62, 122, 1891, 3782, 5519, 11038, 171089, 336659, 342178, 673318, 10436429, 20872858]

約数ペア:

[(1, 20872858), (2, 10436429), (31, 673318), (61, 342178), (62, 336659), (122, 171089), (1891, 11038), (3782, 5519)]