21044997

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{523}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 32370624

約数和(自身を除く): 11325627

約数列:

[1, 3, 9, 17, 51, 153, 263, 523, 789, 1569, 2367, 4471, 4707, 8891, 13413, 26673, 40239, 80019, 137549, 412647, 1237941, 2338333, 7014999, 21044997]

約数ペア:

[(1, 21044997), (3, 7014999), (9, 2338333), (17, 1237941), (51, 412647), (153, 137549), (263, 80019), (523, 40239), (789, 26673), (1569, 13413), (2367, 8891), (4471, 4707)]