644895

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 1218240

約数和(自身を除く): 573345

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 281, 459, 765, 843, 1405, 2295, 2529, 4215, 4777, 7587, 12645, 14331, 23885, 37935, 42993, 71655, 128979, 214965, 644895]

約数ペア:

[(1, 644895), (3, 214965), (5, 128979), (9, 71655), (15, 42993), (17, 37935), (27, 23885), (45, 14331), (51, 12645), (85, 7587), (135, 4777), (153, 4215), (255, 2529), (281, 2295), (459, 1405), (765, 843)]