81237712

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{37061}}^1$

素因数の和:37206

約数の個数: 20

約数和(自身を含む): 158551236

約数和(自身を除く): 77313524

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 37061, 74122, 148244, 296488, 592976, 5077357, 10154714, 20309428, 40618856, 81237712]

約数ペア:

[(1, 81237712), (2, 40618856), (4, 20309428), (8, 10154714), (16, 5077357), (137, 592976), (274, 296488), (548, 148244), (1096, 74122), (2192, 37061)]