81271268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{23327}}^1$

素因数の和:23411

約数の個数: 24

約数和(自身を含む): 155457792

約数和(自身を除く): 74186524

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 23327, 46654, 93308, 303251, 606502, 1213004, 1562909, 3125818, 6251636, 20317817, 40635634, 81271268]

約数ペア:

[(1, 81271268), (2, 40635634), (4, 20317817), (13, 6251636), (26, 3125818), (52, 1562909), (67, 1213004), (134, 606502), (268, 303251), (871, 93308), (1742, 46654), (3484, 23327)]