21349017

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{521}}^1$

素因数の和:713

約数の個数: 24

約数和(自身を含む): 32165640

約数和(自身を除く): 10816623

約数列:

[1, 3, 9, 29, 87, 157, 261, 471, 521, 1413, 1563, 4553, 4689, 13659, 15109, 40977, 45327, 81797, 135981, 245391, 736173, 2372113, 7116339, 21349017]

約数ペア:

[(1, 21349017), (3, 7116339), (9, 2372113), (29, 736173), (87, 245391), (157, 135981), (261, 81797), (471, 45327), (521, 40977), (1413, 15109), (1563, 13659), (4553, 4689)]