41998990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{1999}}^1$

素因数の和:2208

約数の個数: 32

約数和(自身を含む): 82944000

約数和(自身を除く): 40945010

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1910, 1999, 2101, 3998, 4202, 9995, 10505, 19990, 21010, 21989, 43978, 109945, 219890, 381809, 763618, 1909045, 3818090, 4199899, 8399798, 20999495, 41998990]

約数ペア:

[(1, 41998990), (2, 20999495), (5, 8399798), (10, 4199899), (11, 3818090), (22, 1909045), (55, 763618), (110, 381809), (191, 219890), (382, 109945), (955, 43978), (1910, 21989), (1999, 21010), (2101, 19990), (3998, 10505), (4202, 9995)]