21266560

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:174

約数の個数: 128

約数和(自身を含む): 59927040

約数和(自身を除く): 38660480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 70, 80, 94, 101, 112, 128, 140, 160, 188, 202, 224, 235, 280, 320, 329, 376, 404, 448, 470, 505, 560, 640, 658, 707, 752, 808, 896, 940, 1010, 1120, 1316, 1414, 1504, 1616, 1645, 1880, 2020, 2240, 2632, 2828, 3008, 3232, 3290, 3535, 3760, 4040, 4480, 4747, 5264, 5656, 6016, 6464, 6580, 7070, 7520, 8080, 9494, 10528, 11312, 12928, 13160, 14140, 15040, 16160, 18988, 21056, 22624, 23735, 26320, 28280, 30080, 32320, 33229, 37976, 42112, 45248, 47470, 52640, 56560, 64640, 66458, 75952, 90496, 94940, 105280, 113120, 132916, 151904, 166145, 189880, 210560, 226240, 265832, 303808, 332290, 379760, 452480, 531664, 607616, 664580, 759520, 1063328, 1329160, 1519040, 2126656, 2658320, 3038080, 4253312, 5316640, 10633280, 21266560]

約数ペア:

[(1, 21266560), (2, 10633280), (4, 5316640), (5, 4253312), (7, 3038080), (8, 2658320), (10, 2126656), (14, 1519040), (16, 1329160), (20, 1063328), (28, 759520), (32, 664580), (35, 607616), (40, 531664), (47, 452480), (56, 379760), (64, 332290), (70, 303808), (80, 265832), (94, 226240), (101, 210560), (112, 189880), (128, 166145), (140, 151904), (160, 132916), (188, 113120), (202, 105280), (224, 94940), (235, 90496), (280, 75952), (320, 66458), (329, 64640), (376, 56560), (404, 52640), (448, 47470), (470, 45248), (505, 42112), (560, 37976), (640, 33229), (658, 32320), (707, 30080), (752, 28280), (808, 26320), (896, 23735), (940, 22624), (1010, 21056), (1120, 18988), (1316, 16160), (1414, 15040), (1504, 14140), (1616, 13160), (1645, 12928), (1880, 11312), (2020, 10528), (2240, 9494), (2632, 8080), (2828, 7520), (3008, 7070), (3232, 6580), (3290, 6464), (3535, 6016), (3760, 5656), (4040, 5264), (4480, 4747)]