7728820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:125

約数の個数: 72

約数和(自身を含む): 19081440

約数和(自身を除く): 11352620

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 43, 44, 55, 76, 86, 95, 110, 172, 190, 209, 215, 220, 380, 418, 430, 473, 817, 836, 860, 946, 1045, 1634, 1849, 1892, 2090, 2365, 3268, 3698, 4085, 4180, 4730, 7396, 8170, 8987, 9245, 9460, 16340, 17974, 18490, 20339, 35131, 35948, 36980, 40678, 44935, 70262, 81356, 89870, 101695, 140524, 175655, 179740, 203390, 351310, 386441, 406780, 702620, 772882, 1545764, 1932205, 3864410, 7728820]

約数ペア:

[(1, 7728820), (2, 3864410), (4, 1932205), (5, 1545764), (10, 772882), (11, 702620), (19, 406780), (20, 386441), (22, 351310), (38, 203390), (43, 179740), (44, 175655), (55, 140524), (76, 101695), (86, 89870), (95, 81356), (110, 70262), (172, 44935), (190, 40678), (209, 36980), (215, 35948), (220, 35131), (380, 20339), (418, 18490), (430, 17974), (473, 16340), (817, 9460), (836, 9245), (860, 8987), (946, 8170), (1045, 7396), (1634, 4730), (1849, 4180), (1892, 4085), (2090, 3698), (2365, 3268)]