21539284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{414217}}^1$

素因数の和:414234

約数の個数: 12

約数和(自身を含む): 40593364

約数和(自身を除く): 19054080

約数列:

[1, 2, 4, 13, 26, 52, 414217, 828434, 1656868, 5384821, 10769642, 21539284]

約数ペア:

[(1, 21539284), (2, 10769642), (4, 5384821), (13, 1656868), (26, 828434), (52, 414217)]