21966010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{503}}^1$

素因数の和:918

約数の個数: 32

約数和(自身を含む): 43327872

約数和(自身を除く): 21361862

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 397, 503, 794, 1006, 1985, 2515, 3970, 4367, 5030, 5533, 8734, 11066, 21835, 27665, 43670, 55330, 199691, 399382, 998455, 1996910, 2196601, 4393202, 10983005, 21966010]

約数ペア:

[(1, 21966010), (2, 10983005), (5, 4393202), (10, 2196601), (11, 1996910), (22, 998455), (55, 399382), (110, 199691), (397, 55330), (503, 43670), (794, 27665), (1006, 21835), (1985, 11066), (2515, 8734), (3970, 5533), (4367, 5030)]