21159500

素因数分解:

$2^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{419}}^1$

素因数の和:539

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 25621780

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 125, 202, 250, 404, 419, 500, 505, 838, 1010, 1676, 2020, 2095, 2525, 4190, 5050, 8380, 10100, 10475, 12625, 20950, 25250, 41900, 42319, 50500, 52375, 84638, 104750, 169276, 209500, 211595, 423190, 846380, 1057975, 2115950, 4231900, 5289875, 10579750, 21159500]

約数ペア:

[(1, 21159500), (2, 10579750), (4, 5289875), (5, 4231900), (10, 2115950), (20, 1057975), (25, 846380), (50, 423190), (100, 211595), (101, 209500), (125, 169276), (202, 104750), (250, 84638), (404, 52375), (419, 50500), (500, 42319), (505, 41900), (838, 25250), (1010, 20950), (1676, 12625), (2020, 10475), (2095, 10100), (2525, 8380), (4190, 5050)]