21271390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43411}}^1$

素因数の和:43432

約数の個数: 24

約数和(自身を含む): 44540712

約数和(自身を除く): 23269322

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43411, 86822, 217055, 303877, 434110, 607754, 1519385, 2127139, 3038770, 4254278, 10635695, 21271390]

約数ペア:

[(1, 21271390), (2, 10635695), (5, 4254278), (7, 3038770), (10, 2127139), (14, 1519385), (35, 607754), (49, 434110), (70, 303877), (98, 217055), (245, 86822), (490, 43411)]