30870441

素因数分解:

$3^2\times 7^2\times {\mathrm{70001}}^1$

素因数の和:70021

約数の個数: 18

約数和(自身を含む): 51871482

約数和(自身を除く): 21001041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 70001, 210003, 490007, 630009, 1470021, 3430049, 4410063, 10290147, 30870441]

約数ペア:

[(1, 30870441), (3, 10290147), (7, 4410063), (9, 3430049), (21, 1470021), (49, 630009), (63, 490007), (147, 210003), (441, 70001)]