21718485045

素因数分解:

$3^4\times 5^1\times {\mathrm{53625889}}^1$

素因数の和:53625906

約数の個数: 20

約数和(自身を含む): 38932396140

約数和(自身を除く): 17213911095

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53625889, 160877667, 268129445, 482633001, 804388335, 1447899003, 2413165005, 4343697009, 7239495015, 21718485045]

約数ペア:

[(1, 21718485045), (3, 7239495015), (5, 4343697009), (9, 2413165005), (15, 1447899003), (27, 804388335), (45, 482633001), (81, 268129445), (135, 160877667), (405, 53625889)]