30991390

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{72073}}^1$

素因数の和:72123

約数の個数: 16

約数和(自身を含む): 57082608

約数和(自身を除く): 26091218

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 72073, 144146, 360365, 720730, 3099139, 6198278, 15495695, 30991390]

約数ペア:

[(1, 30991390), (2, 15495695), (5, 6198278), (10, 3099139), (43, 720730), (86, 360365), (215, 144146), (430, 72073)]