171640880

素因数分解:

$2^4\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{2081}}^1$

素因数の和:3125

約数の個数: 40

約数和(自身を含む): 399644064

約数和(自身を除く): 228003184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1031, 2062, 2081, 4124, 4162, 5155, 8248, 8324, 10310, 10405, 16496, 16648, 20620, 20810, 33296, 41240, 41620, 82480, 83240, 166480, 2145511, 4291022, 8582044, 10727555, 17164088, 21455110, 34328176, 42910220, 85820440, 171640880]

約数ペア:

[(1, 171640880), (2, 85820440), (4, 42910220), (5, 34328176), (8, 21455110), (10, 17164088), (16, 10727555), (20, 8582044), (40, 4291022), (80, 2145511), (1031, 166480), (2062, 83240), (2081, 82480), (4124, 41620), (4162, 41240), (5155, 33296), (8248, 20810), (8324, 20620), (10310, 16648), (10405, 16496)]