16645220

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1931}}^1$

素因数の和:2371

約数の個数: 24

約数和(自身を含む): 35054208

約数和(自身を除く): 18408988

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 1931, 2155, 3862, 4310, 7724, 8620, 9655, 19310, 38620, 832261, 1664522, 3329044, 4161305, 8322610, 16645220]

約数ペア:

[(1, 16645220), (2, 8322610), (4, 4161305), (5, 3329044), (10, 1664522), (20, 832261), (431, 38620), (862, 19310), (1724, 9655), (1931, 8620), (2155, 7724), (3862, 4310)]