21000612308

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{4943}}^1\times {\mathrm{81703}}^1$

素因数の和:86663

約数の個数: 24

約数和(自身を含む): 39586568448

約数和(自身を除く): 18585956140

約数列:

[1, 2, 4, 13, 26, 52, 4943, 9886, 19772, 64259, 81703, 128518, 163406, 257036, 326812, 1062139, 2124278, 4248556, 403857929, 807715858, 1615431716, 5250153077, 10500306154, 21000612308]

約数ペア:

[(1, 21000612308), (2, 10500306154), (4, 5250153077), (13, 1615431716), (26, 807715858), (52, 403857929), (4943, 4248556), (9886, 2124278), (19772, 1062139), (64259, 326812), (81703, 257036), (128518, 163406)]