81125720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156011}}^1$

素因数の和:156035

約数の個数: 32

約数和(自身を含む): 196575120

約数和(自身を除く): 115449400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 156011, 312022, 624044, 780055, 1248088, 1560110, 2028143, 3120220, 4056286, 6240440, 8112572, 10140715, 16225144, 20281430, 40562860, 81125720]

約数ペア:

[(1, 81125720), (2, 40562860), (4, 20281430), (5, 16225144), (8, 10140715), (10, 8112572), (13, 6240440), (20, 4056286), (26, 3120220), (40, 2028143), (52, 1560110), (65, 1248088), (104, 780055), (130, 624044), (260, 312022), (520, 156011)]