20805890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{42461}}^1$

素因数の和:42482

約数の個数: 24

約数和(自身を含む): 43566012

約数和(自身を除く): 22760122

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 42461, 84922, 212305, 297227, 424610, 594454, 1486135, 2080589, 2972270, 4161178, 10402945, 20805890]

約数ペア:

[(1, 20805890), (2, 10402945), (5, 4161178), (7, 2972270), (10, 2080589), (14, 1486135), (35, 594454), (49, 424610), (70, 297227), (98, 212305), (245, 84922), (490, 42461)]