18220940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53591}}^1$

素因数の和:53617

約数の個数: 24

約数和(自身を含む): 40515552

約数和(自身を除く): 22294612

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 53591, 107182, 214364, 267955, 535910, 911047, 1071820, 1822094, 3644188, 4555235, 9110470, 18220940]

約数ペア:

[(1, 18220940), (2, 9110470), (4, 4555235), (5, 3644188), (10, 1822094), (17, 1071820), (20, 911047), (34, 535910), (68, 267955), (85, 214364), (170, 107182), (340, 53591)]