21981860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57847}}^1$

素因数の和:57875

約数の個数: 24

約数和(自身を含む): 48592320

約数和(自身を除く): 26610460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57847, 115694, 231388, 289235, 578470, 1099093, 1156940, 2198186, 4396372, 5495465, 10990930, 21981860]

約数ペア:

[(1, 21981860), (2, 10990930), (4, 5495465), (5, 4396372), (10, 2198186), (19, 1156940), (20, 1099093), (38, 578470), (76, 289235), (95, 231388), (190, 115694), (380, 57847)]