21018825

素因数分解:

$3^3\times 5^2\times {\mathrm{31139}}^1$

素因数の和:31158

約数の個数: 24

約数和(自身を含む): 38613600

約数和(自身を除く): 17594775

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31139, 93417, 155695, 280251, 467085, 778475, 840753, 1401255, 2335425, 4203765, 7006275, 21018825]

約数ペア:

[(1, 21018825), (3, 7006275), (5, 4203765), (9, 2335425), (15, 1401255), (25, 840753), (27, 778475), (45, 467085), (75, 280251), (135, 155695), (225, 93417), (675, 31139)]