21889945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{56857}}^1$

素因数の和:56880

約数の個数: 16

約数和(自身を含む): 32750208

約数和(自身を除く): 10860263

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 56857, 284285, 397999, 625427, 1989995, 3127135, 4377989, 21889945]

約数ペア:

[(1, 21889945), (5, 4377989), (7, 3127135), (11, 1989995), (35, 625427), (55, 397999), (77, 284285), (385, 56857)]