21399140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152851}}^1$

素因数の和:152867

約数の個数: 24

約数和(自身を含む): 51358272

約数和(自身を除く): 29959132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152851, 305702, 611404, 764255, 1069957, 1528510, 2139914, 3057020, 4279828, 5349785, 10699570, 21399140]

約数ペア:

[(1, 21399140), (2, 10699570), (4, 5349785), (5, 4279828), (7, 3057020), (10, 2139914), (14, 1528510), (20, 1069957), (28, 764255), (35, 611404), (70, 305702), (140, 152851)]