19986704

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2309}}^1$

素因数の和:2858

約数の個数: 20

約数和(自身を含む): 38812620

約数和(自身を除く): 18825916

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2309, 4328, 4618, 8656, 9236, 18472, 36944, 1249169, 2498338, 4996676, 9993352, 19986704]

約数ペア:

[(1, 19986704), (2, 9993352), (4, 4996676), (8, 2498338), (16, 1249169), (541, 36944), (1082, 18472), (2164, 9236), (2309, 8656), (4328, 4618)]