81213392

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390449}}^1$

素因数の和:390470

約数の個数: 20

約数和(自身を含む): 169455300

約数和(自身を除く): 88241908

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390449, 780898, 1561796, 3123592, 5075837, 6247184, 10151674, 20303348, 40606696, 81213392]

約数ペア:

[(1, 81213392), (2, 40606696), (4, 20303348), (8, 10151674), (13, 6247184), (16, 5075837), (26, 3123592), (52, 1561796), (104, 780898), (208, 390449)]