21290644

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{991}}^1$

素因数の和:1167

約数の個数: 24

約数和(自身を含む): 38497536

約数和(自身を除く): 17206892

約数列:

[1, 2, 4, 41, 82, 131, 164, 262, 524, 991, 1982, 3964, 5371, 10742, 21484, 40631, 81262, 129821, 162524, 259642, 519284, 5322661, 10645322, 21290644]

約数ペア:

[(1, 21290644), (2, 10645322), (4, 5322661), (41, 519284), (82, 259642), (131, 162524), (164, 129821), (262, 81262), (524, 40631), (991, 21484), (1982, 10742), (3964, 5371)]