20197771

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{971}}^1$

素因数の和:1074

約数の個数: 16

約数和(自身を含む): 23141376

約数和(自身を除く): 2943605

約数列:

[1, 11, 31, 61, 341, 671, 971, 1891, 10681, 20801, 30101, 59231, 331111, 651541, 1836161, 20197771]

約数ペア:

[(1, 20197771), (11, 1836161), (31, 651541), (61, 331111), (341, 59231), (671, 30101), (971, 20801), (1891, 10681)]