19865978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{29129}}^1$

素因数の和:29173

約数の個数: 16

約数和(自身を含む): 33557760

約数和(自身を除く): 13691782

約数列:

[1, 2, 11, 22, 31, 62, 341, 682, 29129, 58258, 320419, 640838, 902999, 1805998, 9932989, 19865978]

約数ペア:

[(1, 19865978), (2, 9932989), (11, 1805998), (22, 902999), (31, 640838), (62, 320419), (341, 58258), (682, 29129)]