1809920

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{101}}^1$

素因数の和:131

約数の個数: 80

約数和(自身を含む): 5008608

約数和(自身を除く): 3198688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 101, 112, 128, 140, 160, 202, 224, 256, 280, 320, 404, 448, 505, 512, 560, 640, 707, 808, 896, 1010, 1120, 1280, 1414, 1616, 1792, 2020, 2240, 2560, 2828, 3232, 3535, 3584, 4040, 4480, 5656, 6464, 7070, 8080, 8960, 11312, 12928, 14140, 16160, 17920, 22624, 25856, 28280, 32320, 45248, 51712, 56560, 64640, 90496, 113120, 129280, 180992, 226240, 258560, 361984, 452480, 904960, 1809920]

約数ペア:

[(1, 1809920), (2, 904960), (4, 452480), (5, 361984), (7, 258560), (8, 226240), (10, 180992), (14, 129280), (16, 113120), (20, 90496), (28, 64640), (32, 56560), (35, 51712), (40, 45248), (56, 32320), (64, 28280), (70, 25856), (80, 22624), (101, 17920), (112, 16160), (128, 14140), (140, 12928), (160, 11312), (202, 8960), (224, 8080), (256, 7070), (280, 6464), (320, 5656), (404, 4480), (448, 4040), (505, 3584), (512, 3535), (560, 3232), (640, 2828), (707, 2560), (808, 2240), (896, 2020), (1010, 1792), (1120, 1616), (1280, 1414)]