21089574

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:474

約数の個数: 72

約数和(自身を含む): 52533936

約数和(自身を除く): 31444362

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 23, 33, 46, 66, 69, 99, 121, 138, 198, 207, 242, 253, 363, 414, 421, 506, 726, 759, 842, 1089, 1263, 1518, 2178, 2277, 2526, 2783, 3789, 4554, 4631, 5566, 7578, 8349, 9262, 9683, 13893, 16698, 19366, 25047, 27786, 29049, 41679, 50094, 50941, 58098, 83358, 87147, 101882, 106513, 152823, 174294, 213026, 305646, 319539, 458469, 639078, 916938, 958617, 1171643, 1917234, 2343286, 3514929, 7029858, 10544787, 21089574]

約数ペア:

[(1, 21089574), (2, 10544787), (3, 7029858), (6, 3514929), (9, 2343286), (11, 1917234), (18, 1171643), (22, 958617), (23, 916938), (33, 639078), (46, 458469), (66, 319539), (69, 305646), (99, 213026), (121, 174294), (138, 152823), (198, 106513), (207, 101882), (242, 87147), (253, 83358), (363, 58098), (414, 50941), (421, 50094), (506, 41679), (726, 29049), (759, 27786), (842, 25047), (1089, 19366), (1263, 16698), (1518, 13893), (2178, 9683), (2277, 9262), (2526, 8349), (2783, 7578), (3789, 5566), (4554, 4631)]