18980836

素因数分解:

$2^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{857}}^1$

素因数の和:988

約数の個数: 36

約数和(自身を含む): 39026988

約数和(自身を除く): 20046152

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 196, 226, 452, 791, 857, 1582, 1714, 3164, 3428, 5537, 5999, 11074, 11998, 22148, 23996, 41993, 83986, 96841, 167972, 193682, 387364, 677887, 1355774, 2711548, 4745209, 9490418, 18980836]

約数ペア:

[(1, 18980836), (2, 9490418), (4, 4745209), (7, 2711548), (14, 1355774), (28, 677887), (49, 387364), (98, 193682), (113, 167972), (196, 96841), (226, 83986), (452, 41993), (791, 23996), (857, 22148), (1582, 11998), (1714, 11074), (3164, 5999), (3428, 5537)]