18685185

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 31059072

約数和(自身を除く): 12373887

約数列:

[1, 3, 5, 15, 37, 111, 131, 185, 257, 393, 555, 655, 771, 1285, 1965, 3855, 4847, 9509, 14541, 24235, 28527, 33667, 47545, 72705, 101001, 142635, 168335, 505005, 1245679, 3737037, 6228395, 18685185]

約数ペア:

[(1, 18685185), (3, 6228395), (5, 3737037), (15, 1245679), (37, 505005), (111, 168335), (131, 142635), (185, 101001), (257, 72705), (393, 47545), (555, 33667), (655, 28527), (771, 24235), (1285, 14541), (1965, 9509), (3855, 4847)]