31121980

素因数分解:

$2^2\times 5^1\times {\mathrm{653}}^1\times {\mathrm{2383}}^1$

素因数の和:3045

約数の個数: 24

約数和(自身を含む): 65483712

約数和(自身を除く): 34361732

約数列:

[1, 2, 4, 5, 10, 20, 653, 1306, 2383, 2612, 3265, 4766, 6530, 9532, 11915, 13060, 23830, 47660, 1556099, 3112198, 6224396, 7780495, 15560990, 31121980]

約数ペア:

[(1, 31121980), (2, 15560990), (4, 7780495), (5, 6224396), (10, 3112198), (20, 1556099), (653, 47660), (1306, 23830), (2383, 13060), (2612, 11915), (3265, 9532), (4766, 6530)]