21405436

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{6977}}^1$

素因数の和:7053

約数の個数: 24

約数和(自身を含む): 41030640

約数和(自身を除く): 19625204

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 236, 767, 1534, 3068, 6977, 13954, 27908, 90701, 181402, 362804, 411643, 823286, 1646572, 5351359, 10702718, 21405436]

約数ペア:

[(1, 21405436), (2, 10702718), (4, 5351359), (13, 1646572), (26, 823286), (52, 411643), (59, 362804), (118, 181402), (236, 90701), (767, 27908), (1534, 13954), (3068, 6977)]