18720196

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{863}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 39191040

約数和(自身を除く): 20470844

約数列:

[1, 2, 4, 11, 17, 22, 29, 34, 44, 58, 68, 116, 187, 319, 374, 493, 638, 748, 863, 986, 1276, 1726, 1972, 3452, 5423, 9493, 10846, 14671, 18986, 21692, 25027, 29342, 37972, 50054, 58684, 100108, 161381, 275297, 322762, 425459, 550594, 645524, 850918, 1101188, 1701836, 4680049, 9360098, 18720196]

約数ペア:

[(1, 18720196), (2, 9360098), (4, 4680049), (11, 1701836), (17, 1101188), (22, 850918), (29, 645524), (34, 550594), (44, 425459), (58, 322762), (68, 275297), (116, 161381), (187, 100108), (319, 58684), (374, 50054), (493, 37972), (638, 29342), (748, 25027), (863, 21692), (986, 18986), (1276, 14671), (1726, 10846), (1972, 9493), (3452, 5423)]