21417448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205937}}^1$

素因数の和:205956

約数の個数: 16

約数和(自身を含む): 43246980

約数和(自身を除く): 21829532

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205937, 411874, 823748, 1647496, 2677181, 5354362, 10708724, 21417448]

約数ペア:

[(1, 21417448), (2, 10708724), (4, 5354362), (8, 2677181), (13, 1647496), (26, 823748), (52, 411874), (104, 205937)]