21000663465

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{455003}}^1$

素因数の和:455209

約数の個数: 32

約数和(自身を含む): 35774234496

約数和(自身を除く): 14773571031

約数列:

[1, 3, 5, 15, 17, 51, 85, 181, 255, 543, 905, 2715, 3077, 9231, 15385, 46155, 455003, 1365009, 2275015, 6825045, 7735051, 23205153, 38675255, 82355543, 116025765, 247066629, 411777715, 1235333145, 1400044231, 4200132693, 7000221155, 21000663465]

約数ペア:

[(1, 21000663465), (3, 7000221155), (5, 4200132693), (15, 1400044231), (17, 1235333145), (51, 411777715), (85, 247066629), (181, 116025765), (255, 82355543), (543, 38675255), (905, 23205153), (2715, 7735051), (3077, 6825045), (9231, 2275015), (15385, 1365009), (46155, 455003)]