81374540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312979}}^1$

素因数の和:313001

約数の個数: 24

約数和(自身を含む): 184032240

約数和(自身を除く): 102657700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312979, 625958, 1251916, 1564895, 3129790, 4068727, 6259580, 8137454, 16274908, 20343635, 40687270, 81374540]

約数ペア:

[(1, 81374540), (2, 40687270), (4, 20343635), (5, 16274908), (10, 8137454), (13, 6259580), (20, 4068727), (26, 3129790), (52, 1564895), (65, 1251916), (130, 625958), (260, 312979)]