81563404

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{2447}}^1$

素因数の和:3105

約数の個数: 24

約数和(自身を含む): 154018368

約数和(自身を除く): 72454964

約数列:

[1, 2, 4, 13, 26, 52, 641, 1282, 2447, 2564, 4894, 8333, 9788, 16666, 31811, 33332, 63622, 127244, 1568527, 3137054, 6274108, 20390851, 40781702, 81563404]

約数ペア:

[(1, 81563404), (2, 40781702), (4, 20390851), (13, 6274108), (26, 3137054), (52, 1568527), (641, 127244), (1282, 63622), (2447, 33332), (2564, 31811), (4894, 16666), (8333, 9788)]