21696790

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52919}}^1$

素因数の和:52967

約数の個数: 16

約数和(自身を含む): 40007520

約数和(自身を除く): 18310730

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52919, 105838, 264595, 529190, 2169679, 4339358, 10848395, 21696790]

約数ペア:

[(1, 21696790), (2, 10848395), (5, 4339358), (10, 2169679), (41, 529190), (82, 264595), (205, 105838), (410, 52919)]