21019060

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25633}}^1$

素因数の和:25683

約数の個数: 24

約数和(自身を含む): 45218376

約数和(自身を除く): 24199316

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25633, 51266, 102532, 128165, 256330, 512660, 1050953, 2101906, 4203812, 5254765, 10509530, 21019060]

約数ペア:

[(1, 21019060), (2, 10509530), (4, 5254765), (5, 4203812), (10, 2101906), (20, 1050953), (41, 512660), (82, 256330), (164, 128165), (205, 102532), (410, 51266), (820, 25633)]