18781958

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{5197}}^1$

素因数の和:5351

約数の個数: 16

約数和(自身を含む): 30564240

約数和(自身を除く): 11782282

約数列:

[1, 2, 13, 26, 139, 278, 1807, 3614, 5197, 10394, 67561, 135122, 722383, 1444766, 9390979, 18781958]

約数ペア:

[(1, 18781958), (2, 9390979), (13, 1444766), (26, 722383), (139, 135122), (278, 67561), (1807, 10394), (3614, 5197)]