81180112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390289}}^1$

素因数の和:390310

約数の個数: 20

約数和(自身を含む): 169385860

約数和(自身を除く): 88205748

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390289, 780578, 1561156, 3122312, 5073757, 6244624, 10147514, 20295028, 40590056, 81180112]

約数ペア:

[(1, 81180112), (2, 40590056), (4, 20295028), (8, 10147514), (13, 6244624), (16, 5073757), (26, 3122312), (52, 1561156), (104, 780578), (208, 390289)]