20177320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11731}}^1$

素因数の和:11785

約数の個数: 32

約数和(自身を含む): 46458720

約数和(自身を除く): 26281400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11731, 23462, 46924, 58655, 93848, 117310, 234620, 469240, 504433, 1008866, 2017732, 2522165, 4035464, 5044330, 10088660, 20177320]

約数ペア:

[(1, 20177320), (2, 10088660), (4, 5044330), (5, 4035464), (8, 2522165), (10, 2017732), (20, 1008866), (40, 504433), (43, 469240), (86, 234620), (172, 117310), (215, 93848), (344, 58655), (430, 46924), (860, 23462), (1720, 11731)]