17720180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12479}}^1$

素因数の和:12559

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 20019340

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12479, 24958, 49916, 62395, 124790, 249580, 886009, 1772018, 3544036, 4430045, 8860090, 17720180]

約数ペア:

[(1, 17720180), (2, 8860090), (4, 4430045), (5, 3544036), (10, 1772018), (20, 886009), (71, 249580), (142, 124790), (284, 62395), (355, 49916), (710, 24958), (1420, 12479)]