21585015

素因数分解:

$3^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{569}}^1$

素因数の和:864

約数の個数: 32

約数和(自身を含む): 38577600

約数和(自身を除く): 16992585

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 281, 569, 843, 1405, 1707, 2529, 2845, 4215, 5121, 7587, 8535, 12645, 15363, 25605, 37935, 76815, 159889, 479667, 799445, 1439001, 2398335, 4317003, 7195005, 21585015]

約数ペア:

[(1, 21585015), (3, 7195005), (5, 4317003), (9, 2398335), (15, 1439001), (27, 799445), (45, 479667), (135, 159889), (281, 76815), (569, 37935), (843, 25605), (1405, 15363), (1707, 12645), (2529, 8535), (2845, 7587), (4215, 5121)]