81561564

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{1021}}^1$

素因数の和:1355

約数の個数: 72

約数和(自身を含む): 236597088

約数和(自身を除く): 155035524

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 317, 634, 951, 1021, 1268, 1902, 2042, 2219, 2853, 3063, 3804, 4084, 4438, 5706, 6126, 6657, 7147, 8876, 9189, 11412, 12252, 13314, 14294, 18378, 19971, 21441, 26628, 28588, 36756, 39942, 42882, 64323, 79884, 85764, 128646, 257292, 323657, 647314, 970971, 1294628, 1941942, 2265599, 2912913, 3883884, 4531198, 5825826, 6796797, 9062396, 11651652, 13593594, 20390391, 27187188, 40780782, 81561564]

約数ペア:

[(1, 81561564), (2, 40780782), (3, 27187188), (4, 20390391), (6, 13593594), (7, 11651652), (9, 9062396), (12, 6796797), (14, 5825826), (18, 4531198), (21, 3883884), (28, 2912913), (36, 2265599), (42, 1941942), (63, 1294628), (84, 970971), (126, 647314), (252, 323657), (317, 257292), (634, 128646), (951, 85764), (1021, 79884), (1268, 64323), (1902, 42882), (2042, 39942), (2219, 36756), (2853, 28588), (3063, 26628), (3804, 21441), (4084, 19971), (4438, 18378), (5706, 14294), (6126, 13314), (6657, 12252), (7147, 11412), (8876, 9189)]