21478080

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1721}}^1$

素因数の和:1754

約数の個数: 112

約数和(自身を含む): 73481184

約数和(自身を除く): 52003104

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1721, 2080, 2496, 3120, 3442, 4160, 5163, 6240, 6884, 8605, 10326, 12480, 13768, 17210, 20652, 22373, 25815, 27536, 34420, 41304, 44746, 51630, 55072, 67119, 68840, 82608, 89492, 103260, 110144, 111865, 134238, 137680, 165216, 178984, 206520, 223730, 268476, 275360, 330432, 335595, 357968, 413040, 447460, 536952, 550720, 671190, 715936, 826080, 894920, 1073904, 1342380, 1431872, 1652160, 1789840, 2147808, 2684760, 3579680, 4295616, 5369520, 7159360, 10739040, 21478080]

約数ペア:

[(1, 21478080), (2, 10739040), (3, 7159360), (4, 5369520), (5, 4295616), (6, 3579680), (8, 2684760), (10, 2147808), (12, 1789840), (13, 1652160), (15, 1431872), (16, 1342380), (20, 1073904), (24, 894920), (26, 826080), (30, 715936), (32, 671190), (39, 550720), (40, 536952), (48, 447460), (52, 413040), (60, 357968), (64, 335595), (65, 330432), (78, 275360), (80, 268476), (96, 223730), (104, 206520), (120, 178984), (130, 165216), (156, 137680), (160, 134238), (192, 111865), (195, 110144), (208, 103260), (240, 89492), (260, 82608), (312, 68840), (320, 67119), (390, 55072), (416, 51630), (480, 44746), (520, 41304), (624, 34420), (780, 27536), (832, 25815), (960, 22373), (1040, 20652), (1248, 17210), (1560, 13768), (1721, 12480), (2080, 10326), (2496, 8605), (3120, 6884), (3442, 6240), (4160, 5163)]