21812140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155801}}^1$

素因数の和:155817

約数の個数: 24

約数和(自身を含む): 52349472

約数和(自身を除く): 30537332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155801, 311602, 623204, 779005, 1090607, 1558010, 2181214, 3116020, 4362428, 5453035, 10906070, 21812140]

約数ペア:

[(1, 21812140), (2, 10906070), (4, 5453035), (5, 4362428), (7, 3116020), (10, 2181214), (14, 1558010), (20, 1090607), (28, 779005), (35, 623204), (70, 311602), (140, 155801)]