20974798

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:388

約数の個数: 32

約数和(自身を含む): 35282016

約数和(自身を除く): 14307218

約数列:

[1, 2, 13, 26, 43, 73, 86, 146, 257, 514, 559, 949, 1118, 1898, 3139, 3341, 6278, 6682, 11051, 18761, 22102, 37522, 40807, 81614, 143663, 243893, 287326, 487786, 806723, 1613446, 10487399, 20974798]

約数ペア:

[(1, 20974798), (2, 10487399), (13, 1613446), (26, 806723), (43, 487786), (73, 287326), (86, 243893), (146, 143663), (257, 81614), (514, 40807), (559, 37522), (949, 22102), (1118, 18761), (1898, 11051), (3139, 6682), (3341, 6278)]