81013556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{21943}}^1$

素因数の和:22031

約数の個数: 24

約数和(自身を含む): 154836864

約数和(自身を除く): 73823308

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 21943, 43886, 87772, 285259, 570518, 1141036, 1557953, 3115906, 6231812, 20253389, 40506778, 81013556]

約数ペア:

[(1, 81013556), (2, 40506778), (4, 20253389), (13, 6231812), (26, 3115906), (52, 1557953), (71, 1141036), (142, 570518), (284, 285259), (923, 87772), (1846, 43886), (3692, 21943)]