2104840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 4791960

約数和(自身を除く): 2687120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 521, 808, 1010, 1042, 2020, 2084, 2605, 4040, 4168, 5210, 10420, 20840, 52621, 105242, 210484, 263105, 420968, 526210, 1052420, 2104840]

約数ペア:

[(1, 2104840), (2, 1052420), (4, 526210), (5, 420968), (8, 263105), (10, 210484), (20, 105242), (40, 52621), (101, 20840), (202, 10420), (404, 5210), (505, 4168), (521, 4040), (808, 2605), (1010, 2084), (1042, 2020)]