21000915

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35899}}^1$

素因数の和:35923

約数の個数: 24

約数和(自身を含む): 39202800

約数和(自身を除く): 18201885

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35899, 107697, 179495, 323091, 466687, 538485, 1400061, 1615455, 2333435, 4200183, 7000305, 21000915]

約数ペア:

[(1, 21000915), (3, 7000305), (5, 4200183), (9, 2333435), (13, 1615455), (15, 1400061), (39, 538485), (45, 466687), (65, 323091), (117, 179495), (195, 107697), (585, 35899)]