3878180

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{919}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 8191680

約数和(自身を除く): 4313500

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 919, 1055, 1838, 2110, 3676, 4220, 4595, 9190, 18380, 193909, 387818, 775636, 969545, 1939090, 3878180]

約数ペア:

[(1, 3878180), (2, 1939090), (4, 969545), (5, 775636), (10, 387818), (20, 193909), (211, 18380), (422, 9190), (844, 4595), (919, 4220), (1055, 3676), (1838, 2110)]