21916910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128923}}^1$

素因数の和:128947

約数の個数: 16

約数和(自身を含む): 41771376

約数和(自身を除く): 19854466

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128923, 257846, 644615, 1289230, 2191691, 4383382, 10958455, 21916910]

約数ペア:

[(1, 21916910), (2, 10958455), (5, 4383382), (10, 2191691), (17, 1289230), (34, 644615), (85, 257846), (170, 128923)]