18401865

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 12080055

約数列:

[1, 3, 5, 15, 53, 79, 159, 237, 265, 293, 395, 795, 879, 1185, 1465, 4187, 4395, 12561, 15529, 20935, 23147, 46587, 62805, 69441, 77645, 115735, 232935, 347205, 1226791, 3680373, 6133955, 18401865]

約数ペア:

[(1, 18401865), (3, 6133955), (5, 3680373), (15, 1226791), (53, 347205), (79, 232935), (159, 115735), (237, 77645), (265, 69441), (293, 62805), (395, 46587), (795, 23147), (879, 20935), (1185, 15529), (1465, 12561), (4187, 4395)]