20118028

素因数分解:

$2^2\times 7^2\times {\mathrm{102643}}^1$

素因数の和:102661

約数の個数: 18

約数和(自身を含む): 40954956

約数和(自身を除く): 20836928

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 102643, 205286, 410572, 718501, 1437002, 2874004, 5029507, 10059014, 20118028]

約数ペア:

[(1, 20118028), (2, 10059014), (4, 5029507), (7, 2874004), (14, 1437002), (28, 718501), (49, 410572), (98, 205286), (196, 102643)]