81105830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1489}}^1$

素因数の和:1928

約数の個数: 32

約数和(自身を含む): 157701600

約数和(自身を除く): 76595770

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 419, 838, 1489, 2095, 2978, 4190, 5447, 7445, 10894, 14890, 19357, 27235, 38714, 54470, 96785, 193570, 623891, 1247782, 3119455, 6238910, 8110583, 16221166, 40552915, 81105830]

約数ペア:

[(1, 81105830), (2, 40552915), (5, 16221166), (10, 8110583), (13, 6238910), (26, 3119455), (65, 1247782), (130, 623891), (419, 193570), (838, 96785), (1489, 54470), (2095, 38714), (2978, 27235), (4190, 19357), (5447, 14890), (7445, 10894)]