81520136

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{248537}}^1$

素因数の和:248584

約数の個数: 16

約数和(自身を含む): 156578940

約数和(自身を除く): 75058804

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 248537, 497074, 994148, 1988296, 10190017, 20380034, 40760068, 81520136]

約数ペア:

[(1, 81520136), (2, 40760068), (4, 20380034), (8, 10190017), (41, 1988296), (82, 994148), (164, 497074), (328, 248537)]