12781136

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{11251}}^1$

素因数の和:11330

約数の個数: 20

約数和(自身を含む): 25114464

約数和(自身を除く): 12333328

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 11251, 22502, 45004, 90008, 180016, 798821, 1597642, 3195284, 6390568, 12781136]

約数ペア:

[(1, 12781136), (2, 6390568), (4, 3195284), (8, 1597642), (16, 798821), (71, 180016), (142, 90008), (284, 45004), (568, 22502), (1136, 11251)]