81227728

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{137209}}^1$

素因数の和:137254

約数の個数: 20

約数和(自身を含む): 161633380

約数和(自身を除く): 80405652

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 137209, 274418, 548836, 1097672, 2195344, 5076733, 10153466, 20306932, 40613864, 81227728]

約数ペア:

[(1, 81227728), (2, 40613864), (4, 20306932), (8, 10153466), (16, 5076733), (37, 2195344), (74, 1097672), (148, 548836), (296, 274418), (592, 137209)]