81407352

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{260921}}^1$

素因数の和:260943

約数の個数: 32

約数和(自身を含む): 219174480

約数和(自身を除く): 137767128

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 260921, 521842, 782763, 1043684, 1565526, 2087368, 3131052, 3391973, 6262104, 6783946, 10175919, 13567892, 20351838, 27135784, 40703676, 81407352]

約数ペア:

[(1, 81407352), (2, 40703676), (3, 27135784), (4, 20351838), (6, 13567892), (8, 10175919), (12, 6783946), (13, 6262104), (24, 3391973), (26, 3131052), (39, 2087368), (52, 1565526), (78, 1043684), (104, 782763), (156, 521842), (312, 260921)]