21554895

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{617}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 36842688

約数和(自身を除く): 15287793

約数列:

[1, 3, 5, 15, 17, 51, 85, 137, 255, 411, 617, 685, 1851, 2055, 2329, 3085, 6987, 9255, 10489, 11645, 31467, 34935, 52445, 84529, 157335, 253587, 422645, 1267935, 1436993, 4310979, 7184965, 21554895]

約数ペア:

[(1, 21554895), (3, 7184965), (5, 4310979), (15, 1436993), (17, 1267935), (51, 422645), (85, 253587), (137, 157335), (255, 84529), (411, 52445), (617, 34935), (685, 31467), (1851, 11645), (2055, 10489), (2329, 9255), (3085, 6987)]