21475440

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4261}}^1$

素因数の和:4287

約数の個数: 120

約数和(自身を含む): 82444128

約数和(自身を除く): 60968688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4261, 5040, 8522, 12783, 17044, 21305, 25566, 29827, 34088, 38349, 42610, 51132, 59654, 63915, 68176, 76698, 85220, 89481, 102264, 119308, 127830, 149135, 153396, 170440, 178962, 191745, 204528, 238616, 255660, 268443, 298270, 306792, 340880, 357924, 383490, 447405, 477232, 511320, 536886, 596540, 613584, 715848, 766980, 894810, 1022640, 1073772, 1193080, 1342215, 1431696, 1533960, 1789620, 2147544, 2386160, 2684430, 3067920, 3579240, 4295088, 5368860, 7158480, 10737720, 21475440]

約数ペア:

[(1, 21475440), (2, 10737720), (3, 7158480), (4, 5368860), (5, 4295088), (6, 3579240), (7, 3067920), (8, 2684430), (9, 2386160), (10, 2147544), (12, 1789620), (14, 1533960), (15, 1431696), (16, 1342215), (18, 1193080), (20, 1073772), (21, 1022640), (24, 894810), (28, 766980), (30, 715848), (35, 613584), (36, 596540), (40, 536886), (42, 511320), (45, 477232), (48, 447405), (56, 383490), (60, 357924), (63, 340880), (70, 306792), (72, 298270), (80, 268443), (84, 255660), (90, 238616), (105, 204528), (112, 191745), (120, 178962), (126, 170440), (140, 153396), (144, 149135), (168, 127830), (180, 119308), (210, 102264), (240, 89481), (252, 85220), (280, 76698), (315, 68176), (336, 63915), (360, 59654), (420, 51132), (504, 42610), (560, 38349), (630, 34088), (720, 29827), (840, 25566), (1008, 21305), (1260, 17044), (1680, 12783), (2520, 8522), (4261, 5040)]