81795028

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{21323}}^1$

素因数の和:21471

約数の個数: 24

約数和(自身を含む): 164791872

約数和(自身を除く): 82996844

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 21323, 42646, 85292, 149261, 298522, 597044, 2921251, 5842502, 11685004, 20448757, 40897514, 81795028]

約数ペア:

[(1, 81795028), (2, 40897514), (4, 20448757), (7, 11685004), (14, 5842502), (28, 2921251), (137, 597044), (274, 298522), (548, 149261), (959, 85292), (1918, 42646), (3836, 21323)]