21807678820

素因数分解:

$2^2\times 5^1\times {\mathrm{32971}}^1\times {\mathrm{33071}}^1$

素因数の和:66051

約数の個数: 24

約数和(自身を含む): 45798899328

約数和(自身を除く): 23991220508

約数列:

[1, 2, 4, 5, 10, 20, 32971, 33071, 65942, 66142, 131884, 132284, 164855, 165355, 329710, 330710, 659420, 661420, 1090383941, 2180767882, 4361535764, 5451919705, 10903839410, 21807678820]

約数ペア:

[(1, 21807678820), (2, 10903839410), (4, 5451919705), (5, 4361535764), (10, 2180767882), (20, 1090383941), (32971, 661420), (33071, 659420), (65942, 330710), (66142, 329710), (131884, 165355), (132284, 164855)]