81978608

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:545

約数の個数: 40

約数和(自身を含む): 161708400

約数和(自身を除く): 79729792

約数列:

[1, 2, 4, 8, 16, 137, 149, 251, 274, 298, 502, 548, 596, 1004, 1096, 1192, 2008, 2192, 2384, 4016, 20413, 34387, 37399, 40826, 68774, 74798, 81652, 137548, 149596, 163304, 275096, 299192, 326608, 550192, 598384, 5123663, 10247326, 20494652, 40989304, 81978608]

約数ペア:

[(1, 81978608), (2, 40989304), (4, 20494652), (8, 10247326), (16, 5123663), (137, 598384), (149, 550192), (251, 326608), (274, 299192), (298, 275096), (502, 163304), (548, 149596), (596, 137548), (1004, 81652), (1096, 74798), (1192, 68774), (2008, 40826), (2192, 37399), (2384, 34387), (4016, 20413)]