20595980

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4007}}^1$

素因数の和:4273

約数の個数: 24

約数和(自身を含む): 43430688

約数和(自身を除く): 22834708

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 4007, 5140, 8014, 16028, 20035, 40070, 80140, 1029799, 2059598, 4119196, 5148995, 10297990, 20595980]

約数ペア:

[(1, 20595980), (2, 10297990), (4, 5148995), (5, 4119196), (10, 2059598), (20, 1029799), (257, 80140), (514, 40070), (1028, 20035), (1285, 16028), (2570, 8014), (4007, 5140)]