21575540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154111}}^1$

素因数の和:154127

約数の個数: 24

約数和(自身を含む): 51781632

約数和(自身を除く): 30206092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154111, 308222, 616444, 770555, 1078777, 1541110, 2157554, 3082220, 4315108, 5393885, 10787770, 21575540]

約数ペア:

[(1, 21575540), (2, 10787770), (4, 5393885), (5, 4315108), (7, 3082220), (10, 2157554), (14, 1541110), (20, 1078777), (28, 770555), (35, 616444), (70, 308222), (140, 154111)]