21053330

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{110807}}^1$

素因数の和:110833

約数の個数: 16

約数和(自身を含む): 39890880

約数和(自身を除く): 18837550

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 110807, 221614, 554035, 1108070, 2105333, 4210666, 10526665, 21053330]

約数ペア:

[(1, 21053330), (2, 10526665), (5, 4210666), (10, 2105333), (19, 1108070), (38, 554035), (95, 221614), (190, 110807)]