21254040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1373}}^1$

素因数の和:1433

約数の個数: 96

約数和(自身を含む): 70733520

約数和(自身を除く): 49479480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 60, 72, 86, 90, 120, 129, 172, 180, 215, 258, 344, 360, 387, 430, 516, 645, 774, 860, 1032, 1290, 1373, 1548, 1720, 1935, 2580, 2746, 3096, 3870, 4119, 5160, 5492, 6865, 7740, 8238, 10984, 12357, 13730, 15480, 16476, 20595, 24714, 27460, 32952, 41190, 49428, 54920, 59039, 61785, 82380, 98856, 118078, 123570, 164760, 177117, 236156, 247140, 295195, 354234, 472312, 494280, 531351, 590390, 708468, 885585, 1062702, 1180780, 1416936, 1771170, 2125404, 2361560, 2656755, 3542340, 4250808, 5313510, 7084680, 10627020, 21254040]

約数ペア:

[(1, 21254040), (2, 10627020), (3, 7084680), (4, 5313510), (5, 4250808), (6, 3542340), (8, 2656755), (9, 2361560), (10, 2125404), (12, 1771170), (15, 1416936), (18, 1180780), (20, 1062702), (24, 885585), (30, 708468), (36, 590390), (40, 531351), (43, 494280), (45, 472312), (60, 354234), (72, 295195), (86, 247140), (90, 236156), (120, 177117), (129, 164760), (172, 123570), (180, 118078), (215, 98856), (258, 82380), (344, 61785), (360, 59039), (387, 54920), (430, 49428), (516, 41190), (645, 32952), (774, 27460), (860, 24714), (1032, 20595), (1290, 16476), (1373, 15480), (1548, 13730), (1720, 12357), (1935, 10984), (2580, 8238), (2746, 7740), (3096, 6865), (3870, 5492), (4119, 5160)]