81571788

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3847}}^1$

素因数の和:3907

約数の個数: 72

約数和(自身を含む): 224107520

約数和(自身を除く): 142535732

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 31, 36, 38, 57, 62, 76, 93, 114, 124, 171, 186, 228, 279, 342, 372, 558, 589, 684, 1116, 1178, 1767, 2356, 3534, 3847, 5301, 7068, 7694, 10602, 11541, 15388, 21204, 23082, 34623, 46164, 69246, 73093, 119257, 138492, 146186, 219279, 238514, 292372, 357771, 438558, 477028, 657837, 715542, 877116, 1073313, 1315674, 1431084, 2146626, 2265883, 2631348, 4293252, 4531766, 6797649, 9063532, 13595298, 20392947, 27190596, 40785894, 81571788]

約数ペア:

[(1, 81571788), (2, 40785894), (3, 27190596), (4, 20392947), (6, 13595298), (9, 9063532), (12, 6797649), (18, 4531766), (19, 4293252), (31, 2631348), (36, 2265883), (38, 2146626), (57, 1431084), (62, 1315674), (76, 1073313), (93, 877116), (114, 715542), (124, 657837), (171, 477028), (186, 438558), (228, 357771), (279, 292372), (342, 238514), (372, 219279), (558, 146186), (589, 138492), (684, 119257), (1116, 73093), (1178, 69246), (1767, 46164), (2356, 34623), (3534, 23082), (3847, 21204), (5301, 15388), (7068, 11541), (7694, 10602)]