21258932

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{991}}^1$

素因数の和:1199

約数の個数: 24

約数和(自身を含む): 38664192

約数和(自身を除く): 17405260

約数列:

[1, 2, 4, 31, 62, 124, 173, 346, 692, 991, 1982, 3964, 5363, 10726, 21452, 30721, 61442, 122884, 171443, 342886, 685772, 5314733, 10629466, 21258932]

約数ペア:

[(1, 21258932), (2, 10629466), (4, 5314733), (31, 685772), (62, 342886), (124, 171443), (173, 122884), (346, 61442), (692, 30721), (991, 21452), (1982, 10726), (3964, 5363)]