20388465

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19699}}^1$

素因数の和:19733

約数の個数: 24

約数和(自身を含む): 36878400

約数和(自身を除く): 16489935

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19699, 59097, 98495, 177291, 295485, 453077, 886455, 1359231, 2265385, 4077693, 6796155, 20388465]

約数ペア:

[(1, 20388465), (3, 6796155), (5, 4077693), (9, 2265385), (15, 1359231), (23, 886455), (45, 453077), (69, 295485), (115, 177291), (207, 98495), (345, 59097), (1035, 19699)]