21890115

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12473}}^1$

素因数の和:12500

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20022525

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12473, 37419, 62365, 112257, 162149, 187095, 336771, 486447, 561285, 810745, 1459341, 1683855, 2432235, 4378023, 7296705, 21890115]

約数ペア:

[(1, 21890115), (3, 7296705), (5, 4378023), (9, 2432235), (13, 1683855), (15, 1459341), (27, 810745), (39, 561285), (45, 486447), (65, 336771), (117, 187095), (135, 162149), (195, 112257), (351, 62365), (585, 37419), (1755, 12473)]