18688015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5113}}^1$

素因数の和:5178

約数の個数: 16

約数和(自身を含む): 24301728

約数和(自身を除く): 5613713

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5113, 25565, 86921, 219859, 434605, 1099295, 3737603, 18688015]

約数ペア:

[(1, 18688015), (5, 3737603), (17, 1099295), (43, 434605), (85, 219859), (215, 86921), (731, 25565), (3655, 5113)]