89808220

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{10979}}^1$

素因数の和:11397

約数の個数: 24

約数和(自身を含む): 189075600

約数和(自身を除く): 99267380

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 10979, 21958, 43916, 54895, 109790, 219580, 4490411, 8980822, 17961644, 22452055, 44904110, 89808220]

約数ペア:

[(1, 89808220), (2, 44904110), (4, 22452055), (5, 17961644), (10, 8980822), (20, 4490411), (409, 219580), (818, 109790), (1636, 54895), (2045, 43916), (4090, 21958), (8180, 10979)]