19390900

素因数分解:

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

素因数の和:1144

約数の個数: 36

約数和(自身を含む): 42323680

約数和(自身を除く): 22932780

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 919, 1055, 1838, 2110, 3676, 4220, 4595, 5275, 9190, 10550, 18380, 21100, 22975, 45950, 91900, 193909, 387818, 775636, 969545, 1939090, 3878180, 4847725, 9695450, 19390900]

約数ペア:

[(1, 19390900), (2, 9695450), (4, 4847725), (5, 3878180), (10, 1939090), (20, 969545), (25, 775636), (50, 387818), (100, 193909), (211, 91900), (422, 45950), (844, 22975), (919, 21100), (1055, 18380), (1838, 10550), (2110, 9190), (3676, 5275), (4220, 4595)]