21248120

素因数分解:

$2^3\times 5^1\times {\mathrm{531203}}^1$

素因数の和:531214

約数の個数: 16

約数和(自身を含む): 47808360

約数和(自身を除く): 26560240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 531203, 1062406, 2124812, 2656015, 4249624, 5312030, 10624060, 21248120]

約数ペア:

[(1, 21248120), (2, 10624060), (4, 5312030), (5, 4249624), (8, 2656015), (10, 2124812), (20, 1062406), (40, 531203)]