81842540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{314779}}^1$

素因数の和:314801

約数の個数: 24

約数和(自身を含む): 185090640

約数和(自身を除く): 103248100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 314779, 629558, 1259116, 1573895, 3147790, 4092127, 6295580, 8184254, 16368508, 20460635, 40921270, 81842540]

約数ペア:

[(1, 81842540), (2, 40921270), (4, 20460635), (5, 16368508), (10, 8184254), (13, 6295580), (20, 4092127), (26, 3147790), (52, 1573895), (65, 1259116), (130, 629558), (260, 314779)]