19980230540

素因数分解:

$2^2\times 5^1\times {\mathrm{999011527}}^1$

素因数の和:999011536

約数の個数: 12

約数和(自身を含む): 41958484176

約数和(自身を除く): 21978253636

約数列:

[1, 2, 4, 5, 10, 20, 999011527, 1998023054, 3996046108, 4995057635, 9990115270, 19980230540]

約数ペア:

[(1, 19980230540), (2, 9990115270), (4, 4995057635), (5, 3996046108), (10, 1998023054), (20, 999011527)]