21790750

素因数分解:

$2^1\times 5^3\times {\mathrm{101}}^1\times {\mathrm{863}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 41243904

約数和(自身を除く): 19453154

約数列:

[1, 2, 5, 10, 25, 50, 101, 125, 202, 250, 505, 863, 1010, 1726, 2525, 4315, 5050, 8630, 12625, 21575, 25250, 43150, 87163, 107875, 174326, 215750, 435815, 871630, 2179075, 4358150, 10895375, 21790750]

約数ペア:

[(1, 21790750), (2, 10895375), (5, 4358150), (10, 2179075), (25, 871630), (50, 435815), (101, 215750), (125, 174326), (202, 107875), (250, 87163), (505, 43150), (863, 25250), (1010, 21575), (1726, 12625), (2525, 8630), (4315, 5050)]