20953556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9371}}^1$

素因数の和:9431

約数の個数: 24

約数和(自身を含む): 40412064

約数和(自身を除く): 19458508

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9371, 18742, 37484, 121823, 243646, 402953, 487292, 805906, 1611812, 5238389, 10476778, 20953556]

約数ペア:

[(1, 20953556), (2, 10476778), (4, 5238389), (13, 1611812), (26, 805906), (43, 487292), (52, 402953), (86, 243646), (172, 121823), (559, 37484), (1118, 18742), (2236, 9371)]