2000020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9091}}^1$

素因数の和:9111

約数の個数: 24

約数和(自身を含む): 4582368

約数和(自身を除く): 2582348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9091, 18182, 36364, 45455, 90910, 100001, 181820, 200002, 400004, 500005, 1000010, 2000020]

約数ペア:

[(1, 2000020), (2, 1000010), (4, 500005), (5, 400004), (10, 200002), (11, 181820), (20, 100001), (22, 90910), (44, 45455), (55, 36364), (110, 18182), (220, 9091)]