18787857

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{3821}}^1$

素因数の和:3984

約数の個数: 16

約数和(自身を含む): 27518400

約数和(自身を除く): 8730543

約数列:

[1, 3, 11, 33, 149, 447, 1639, 3821, 4917, 11463, 42031, 126093, 569329, 1707987, 6262619, 18787857]

約数ペア:

[(1, 18787857), (3, 6262619), (11, 1707987), (33, 569329), (149, 126093), (447, 42031), (1639, 11463), (3821, 4917)]