21409605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{67967}}^1$

素因数の和:67985

約数の個数: 24

約数和(自身を含む): 42412032

約数和(自身を除く): 21002427

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 67967, 203901, 339835, 475769, 611703, 1019505, 1427307, 2378845, 3058515, 4281921, 7136535, 21409605]

約数ペア:

[(1, 21409605), (3, 7136535), (5, 4281921), (7, 3058515), (9, 2378845), (15, 1427307), (21, 1019505), (35, 611703), (45, 475769), (63, 339835), (105, 203901), (315, 67967)]