20009920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{8933}}^1$

素因数の和:8957

約数の個数: 56

約数和(自身を含む): 54461664

約数和(自身を除く): 34451744

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 8933, 17866, 35732, 44665, 62531, 71464, 89330, 125062, 142928, 178660, 250124, 285856, 312655, 357320, 500248, 571712, 625310, 714640, 1000496, 1250620, 1429280, 2000992, 2501240, 2858560, 4001984, 5002480, 10004960, 20009920]

約数ペア:

[(1, 20009920), (2, 10004960), (4, 5002480), (5, 4001984), (7, 2858560), (8, 2501240), (10, 2000992), (14, 1429280), (16, 1250620), (20, 1000496), (28, 714640), (32, 625310), (35, 571712), (40, 500248), (56, 357320), (64, 312655), (70, 285856), (80, 250124), (112, 178660), (140, 142928), (160, 125062), (224, 89330), (280, 71464), (320, 62531), (448, 44665), (560, 35732), (1120, 17866), (2240, 8933)]