21025920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:302

約数の個数: 128

約数和(自身を含む): 68739840

約数和(自身を除く): 47713920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 47, 48, 60, 64, 80, 94, 96, 120, 128, 141, 160, 188, 192, 233, 235, 240, 282, 320, 376, 384, 466, 470, 480, 564, 640, 699, 705, 752, 932, 940, 960, 1128, 1165, 1398, 1410, 1504, 1864, 1880, 1920, 2256, 2330, 2796, 2820, 3008, 3495, 3728, 3760, 4512, 4660, 5592, 5640, 6016, 6990, 7456, 7520, 9024, 9320, 10951, 11184, 11280, 13980, 14912, 15040, 18048, 18640, 21902, 22368, 22560, 27960, 29824, 30080, 32853, 37280, 43804, 44736, 45120, 54755, 55920, 65706, 74560, 87608, 89472, 90240, 109510, 111840, 131412, 149120, 164265, 175216, 219020, 223680, 262824, 328530, 350432, 438040, 447360, 525648, 657060, 700864, 876080, 1051296, 1314120, 1401728, 1752160, 2102592, 2628240, 3504320, 4205184, 5256480, 7008640, 10512960, 21025920]

約数ペア:

[(1, 21025920), (2, 10512960), (3, 7008640), (4, 5256480), (5, 4205184), (6, 3504320), (8, 2628240), (10, 2102592), (12, 1752160), (15, 1401728), (16, 1314120), (20, 1051296), (24, 876080), (30, 700864), (32, 657060), (40, 525648), (47, 447360), (48, 438040), (60, 350432), (64, 328530), (80, 262824), (94, 223680), (96, 219020), (120, 175216), (128, 164265), (141, 149120), (160, 131412), (188, 111840), (192, 109510), (233, 90240), (235, 89472), (240, 87608), (282, 74560), (320, 65706), (376, 55920), (384, 54755), (466, 45120), (470, 44736), (480, 43804), (564, 37280), (640, 32853), (699, 30080), (705, 29824), (752, 27960), (932, 22560), (940, 22368), (960, 21902), (1128, 18640), (1165, 18048), (1398, 15040), (1410, 14912), (1504, 13980), (1864, 11280), (1880, 11184), (1920, 10951), (2256, 9320), (2330, 9024), (2796, 7520), (2820, 7456), (3008, 6990), (3495, 6016), (3728, 5640), (3760, 5592), (4512, 4660)]