28175931

素因数分解:

$3^4\times 7^2\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:286

約数の個数: 60

約数和(自身を含む): 50761920

約数和(自身を除く): 22585989

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 81, 93, 147, 189, 217, 229, 279, 441, 567, 651, 687, 837, 1323, 1519, 1603, 1953, 2061, 2511, 3969, 4557, 4809, 5859, 6183, 7099, 11221, 13671, 14427, 17577, 18549, 21297, 33663, 41013, 43281, 49693, 63891, 100989, 123039, 129843, 149079, 191673, 302967, 347851, 447237, 575019, 908901, 1043553, 1341711, 3130659, 4025133, 9391977, 28175931]

約数ペア:

[(1, 28175931), (3, 9391977), (7, 4025133), (9, 3130659), (21, 1341711), (27, 1043553), (31, 908901), (49, 575019), (63, 447237), (81, 347851), (93, 302967), (147, 191673), (189, 149079), (217, 129843), (229, 123039), (279, 100989), (441, 63891), (567, 49693), (651, 43281), (687, 41013), (837, 33663), (1323, 21297), (1519, 18549), (1603, 17577), (1953, 14427), (2061, 13671), (2511, 11221), (3969, 7099), (4557, 6183), (4809, 5859)]