81334220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2137}}^1$

素因数の和:2330

約数の個数: 48

約数和(自身を含む): 187494048

約数和(自身を除く): 106159828

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 173, 220, 346, 692, 865, 1730, 1903, 2137, 3460, 3806, 4274, 7612, 8548, 9515, 10685, 19030, 21370, 23507, 38060, 42740, 47014, 94028, 117535, 235070, 369701, 470140, 739402, 1478804, 1848505, 3697010, 4066711, 7394020, 8133422, 16266844, 20333555, 40667110, 81334220]

約数ペア:

[(1, 81334220), (2, 40667110), (4, 20333555), (5, 16266844), (10, 8133422), (11, 7394020), (20, 4066711), (22, 3697010), (44, 1848505), (55, 1478804), (110, 739402), (173, 470140), (220, 369701), (346, 235070), (692, 117535), (865, 94028), (1730, 47014), (1903, 42740), (2137, 38060), (3460, 23507), (3806, 21370), (4274, 19030), (7612, 10685), (8548, 9515)]