81659530

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{3943}}^1$

素因数の和:4078

約数の個数: 32

約数和(自身を含む): 156182400

約数和(自身を除く): 74522870

約数列:

[1, 2, 5, 10, 19, 38, 95, 109, 190, 218, 545, 1090, 2071, 3943, 4142, 7886, 10355, 19715, 20710, 39430, 74917, 149834, 374585, 429787, 749170, 859574, 2148935, 4297870, 8165953, 16331906, 40829765, 81659530]

約数ペア:

[(1, 81659530), (2, 40829765), (5, 16331906), (10, 8165953), (19, 4297870), (38, 2148935), (95, 859574), (109, 749170), (190, 429787), (218, 374585), (545, 149834), (1090, 74917), (2071, 39430), (3943, 20710), (4142, 19715), (7886, 10355)]