19404440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44101}}^1$

素因数の和:44123

約数の個数: 32

約数和(自身を含む): 47630160

約数和(自身を除く): 28225720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44101, 88202, 176404, 220505, 352808, 441010, 485111, 882020, 970222, 1764040, 1940444, 2425555, 3880888, 4851110, 9702220, 19404440]

約数ペア:

[(1, 19404440), (2, 9702220), (4, 4851110), (5, 3880888), (8, 2425555), (10, 1940444), (11, 1764040), (20, 970222), (22, 882020), (40, 485111), (44, 441010), (55, 352808), (88, 220505), (110, 176404), (220, 88202), (440, 44101)]