291236816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^3\times {\mathrm{47}}^1$

素因数の和:161

約数の個数: 80

約数和(自身を含む): 641292288

約数和(自身を除く): 350055472

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 47, 52, 62, 94, 104, 124, 188, 208, 248, 376, 403, 496, 611, 752, 806, 961, 1222, 1457, 1612, 1922, 2444, 2914, 3224, 3844, 4888, 5828, 6448, 7688, 9776, 11656, 12493, 15376, 18941, 23312, 24986, 29791, 37882, 45167, 49972, 59582, 75764, 90334, 99944, 119164, 151528, 180668, 199888, 238328, 303056, 361336, 387283, 476656, 587171, 722672, 774566, 1174342, 1400177, 1549132, 2348684, 2800354, 3098264, 4697368, 5600708, 6196528, 9394736, 11201416, 18202301, 22402832, 36404602, 72809204, 145618408, 291236816]

約数ペア:

[(1, 291236816), (2, 145618408), (4, 72809204), (8, 36404602), (13, 22402832), (16, 18202301), (26, 11201416), (31, 9394736), (47, 6196528), (52, 5600708), (62, 4697368), (94, 3098264), (104, 2800354), (124, 2348684), (188, 1549132), (208, 1400177), (248, 1174342), (376, 774566), (403, 722672), (496, 587171), (611, 476656), (752, 387283), (806, 361336), (961, 303056), (1222, 238328), (1457, 199888), (1612, 180668), (1922, 151528), (2444, 119164), (2914, 99944), (3224, 90334), (3844, 75764), (4888, 59582), (5828, 49972), (6448, 45167), (7688, 37882), (9776, 29791), (11656, 24986), (12493, 23312), (15376, 18941)]