16911990

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{20879}}^1$

素因数の和:20898

約数の個数: 40

約数和(自身を含む): 45476640

約数和(自身を除く): 28564650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 20879, 41758, 62637, 104395, 125274, 187911, 208790, 313185, 375822, 563733, 626370, 939555, 1127466, 1691199, 1879110, 2818665, 3382398, 5637330, 8455995, 16911990]

約数ペア:

[(1, 16911990), (2, 8455995), (3, 5637330), (5, 3382398), (6, 2818665), (9, 1879110), (10, 1691199), (15, 1127466), (18, 939555), (27, 626370), (30, 563733), (45, 375822), (54, 313185), (81, 208790), (90, 187911), (135, 125274), (162, 104395), (270, 62637), (405, 41758), (810, 20879)]