81306524

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{21419}}^1$

素因数の和:21509

約数の個数: 24

約数和(自身を含む): 155337840

約数和(自身を除く): 74031316

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 21419, 42838, 85676, 278447, 556894, 1113788, 1563587, 3127174, 6254348, 20326631, 40653262, 81306524]

約数ペア:

[(1, 81306524), (2, 40653262), (4, 20326631), (13, 6254348), (26, 3127174), (52, 1563587), (73, 1113788), (146, 556894), (292, 278447), (949, 85676), (1898, 42838), (3796, 21419)]