20959960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74857}}^1$

素因数の和:74875

約数の個数: 32

約数和(自身を含む): 53897760

約数和(自身を除く): 32937800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74857, 149714, 299428, 374285, 523999, 598856, 748570, 1047998, 1497140, 2095996, 2619995, 2994280, 4191992, 5239990, 10479980, 20959960]

約数ペア:

[(1, 20959960), (2, 10479980), (4, 5239990), (5, 4191992), (7, 2994280), (8, 2619995), (10, 2095996), (14, 1497140), (20, 1047998), (28, 748570), (35, 598856), (40, 523999), (56, 374285), (70, 299428), (140, 149714), (280, 74857)]