17868220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 39029760

約数和(自身を除く): 21161540

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 263, 316, 395, 430, 526, 790, 860, 1052, 1315, 1580, 2630, 3397, 5260, 6794, 11309, 13588, 16985, 20777, 22618, 33970, 41554, 45236, 56545, 67940, 83108, 103885, 113090, 207770, 226180, 415540, 893411, 1786822, 3573644, 4467055, 8934110, 17868220]

約数ペア:

[(1, 17868220), (2, 8934110), (4, 4467055), (5, 3573644), (10, 1786822), (20, 893411), (43, 415540), (79, 226180), (86, 207770), (158, 113090), (172, 103885), (215, 83108), (263, 67940), (316, 56545), (395, 45236), (430, 41554), (526, 33970), (790, 22618), (860, 20777), (1052, 16985), (1315, 13588), (1580, 11309), (2630, 6794), (3397, 5260)]