81745648

素因数分解:

$2^4\times {\mathrm{239}}^1\times {\mathrm{21377}}^1$

素因数の和:21624

約数の個数: 20

約数和(自身を含む): 159052320

約数和(自身を除く): 77306672

約数列:

[1, 2, 4, 8, 16, 239, 478, 956, 1912, 3824, 21377, 42754, 85508, 171016, 342032, 5109103, 10218206, 20436412, 40872824, 81745648]

約数ペア:

[(1, 81745648), (2, 40872824), (4, 20436412), (8, 10218206), (16, 5109103), (239, 342032), (478, 171016), (956, 85508), (1912, 42754), (3824, 21377)]