21353775

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{12379}}^1$

素因数の和:12415

約数の個数: 24

約数和(自身を含む): 36842880

約数和(自身を除く): 15489105

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 115, 345, 575, 1725, 12379, 37137, 61895, 185685, 284717, 309475, 854151, 928425, 1423585, 4270755, 7117925, 21353775]

約数ペア:

[(1, 21353775), (3, 7117925), (5, 4270755), (15, 1423585), (23, 928425), (25, 854151), (69, 309475), (75, 284717), (115, 185685), (345, 61895), (575, 37137), (1725, 12379)]