21781386

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{719}}^1$

素因数の和:761

約数の個数: 80

約数和(自身を含む): 56453760

約数和(自身を除く): 34672374

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 27, 33, 34, 51, 54, 66, 81, 99, 102, 153, 162, 187, 198, 297, 306, 374, 459, 561, 594, 719, 891, 918, 1122, 1377, 1438, 1683, 1782, 2157, 2754, 3366, 4314, 5049, 6471, 7909, 10098, 12223, 12942, 15147, 15818, 19413, 23727, 24446, 30294, 36669, 38826, 47454, 58239, 71181, 73338, 110007, 116478, 134453, 142362, 213543, 220014, 268906, 330021, 403359, 427086, 640629, 660042, 806718, 990063, 1210077, 1281258, 1980126, 2420154, 3630231, 7260462, 10890693, 21781386]

約数ペア:

[(1, 21781386), (2, 10890693), (3, 7260462), (6, 3630231), (9, 2420154), (11, 1980126), (17, 1281258), (18, 1210077), (22, 990063), (27, 806718), (33, 660042), (34, 640629), (51, 427086), (54, 403359), (66, 330021), (81, 268906), (99, 220014), (102, 213543), (153, 142362), (162, 134453), (187, 116478), (198, 110007), (297, 73338), (306, 71181), (374, 58239), (459, 47454), (561, 38826), (594, 36669), (719, 30294), (891, 24446), (918, 23727), (1122, 19413), (1377, 15818), (1438, 15147), (1683, 12942), (1782, 12223), (2157, 10098), (2754, 7909), (3366, 6471), (4314, 5049)]