20607320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11981}}^1$

素因数の和:12035

約数の個数: 32

約数和(自身を含む): 47448720

約数和(自身を除く): 26841400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11981, 23962, 47924, 59905, 95848, 119810, 239620, 479240, 515183, 1030366, 2060732, 2575915, 4121464, 5151830, 10303660, 20607320]

約数ペア:

[(1, 20607320), (2, 10303660), (4, 5151830), (5, 4121464), (8, 2575915), (10, 2060732), (20, 1030366), (40, 515183), (43, 479240), (86, 239620), (172, 119810), (215, 95848), (344, 59905), (430, 47924), (860, 23962), (1720, 11981)]