21299895

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9281}}^1$

素因数の和:9312

約数の個数: 32

約数和(自身を含む): 40098240

約数和(自身を除く): 18798345

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9281, 27843, 46405, 83529, 139215, 157777, 250587, 417645, 473331, 788885, 1252935, 1419993, 2366655, 4259979, 7099965, 21299895]

約数ペア:

[(1, 21299895), (3, 7099965), (5, 4259979), (9, 2366655), (15, 1419993), (17, 1252935), (27, 788885), (45, 473331), (51, 417645), (85, 250587), (135, 157777), (153, 139215), (255, 83529), (459, 46405), (765, 27843), (2295, 9281)]