20198900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10631}}^1$

素因数の和:10664

約数の個数: 36

約数和(自身を含む): 46142880

約数和(自身を除く): 25943980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 10631, 21262, 42524, 53155, 106310, 201989, 212620, 265775, 403978, 531550, 807956, 1009945, 1063100, 2019890, 4039780, 5049725, 10099450, 20198900]

約数ペア:

[(1, 20198900), (2, 10099450), (4, 5049725), (5, 4039780), (10, 2019890), (19, 1063100), (20, 1009945), (25, 807956), (38, 531550), (50, 403978), (76, 265775), (95, 212620), (100, 201989), (190, 106310), (380, 53155), (475, 42524), (950, 21262), (1900, 10631)]