20215156

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6373}}^1$

素因数の和:6451

約数の個数: 24

約数和(自身を含む): 38728424

約数和(自身を除く): 18513268

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6373, 12746, 25492, 82849, 165698, 331396, 388753, 777506, 1555012, 5053789, 10107578, 20215156]

約数ペア:

[(1, 20215156), (2, 10107578), (4, 5053789), (13, 1555012), (26, 777506), (52, 388753), (61, 331396), (122, 165698), (244, 82849), (793, 25492), (1586, 12746), (3172, 6373)]