19862838971

素因数分解:

${\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1\times {\mathrm{20161}}^1$

素因数の和:20774

約数の個数: 16

約数和(自身を含む): 20880734976

約数和(自身を除く): 1017896005

約数列:

[1, 31, 61, 521, 1891, 16151, 20161, 31781, 624991, 985211, 1229821, 10503881, 38124451, 325620311, 640736741, 19862838971]

約数ペア:

[(1, 19862838971), (31, 640736741), (61, 325620311), (521, 38124451), (1891, 10503881), (16151, 1229821), (20161, 985211), (31781, 624991)]