21295810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51941}}^1$

素因数の和:51989

約数の個数: 16

約数和(自身を含む): 39268152

約数和(自身を除く): 17972342

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51941, 103882, 259705, 519410, 2129581, 4259162, 10647905, 21295810]

約数ペア:

[(1, 21295810), (2, 10647905), (5, 4259162), (10, 2129581), (41, 519410), (82, 259705), (205, 103882), (410, 51941)]