21083750

素因数分解:

$2^1\times 5^4\times {\mathrm{101}}^1\times {\mathrm{167}}^1$

素因数の和:290

約数の個数: 40

約数和(自身を含む): 40149648

約数和(自身を除く): 19065898

約数列:

[1, 2, 5, 10, 25, 50, 101, 125, 167, 202, 250, 334, 505, 625, 835, 1010, 1250, 1670, 2525, 4175, 5050, 8350, 12625, 16867, 20875, 25250, 33734, 41750, 63125, 84335, 104375, 126250, 168670, 208750, 421675, 843350, 2108375, 4216750, 10541875, 21083750]

約数ペア:

[(1, 21083750), (2, 10541875), (5, 4216750), (10, 2108375), (25, 843350), (50, 421675), (101, 208750), (125, 168670), (167, 126250), (202, 104375), (250, 84335), (334, 63125), (505, 41750), (625, 33734), (835, 25250), (1010, 20875), (1250, 16867), (1670, 12625), (2525, 8350), (4175, 5050)]