21356850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{173}}^1\times {\mathrm{823}}^1$

素因数の和:1011

約数の個数: 48

約数和(自身を含む): 53335872

約数和(自身を除く): 31979022

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 173, 346, 519, 823, 865, 1038, 1646, 1730, 2469, 2595, 4115, 4325, 4938, 5190, 8230, 8650, 12345, 12975, 20575, 24690, 25950, 41150, 61725, 123450, 142379, 284758, 427137, 711895, 854274, 1423790, 2135685, 3559475, 4271370, 7118950, 10678425, 21356850]

約数ペア:

[(1, 21356850), (2, 10678425), (3, 7118950), (5, 4271370), (6, 3559475), (10, 2135685), (15, 1423790), (25, 854274), (30, 711895), (50, 427137), (75, 284758), (150, 142379), (173, 123450), (346, 61725), (519, 41150), (823, 25950), (865, 24690), (1038, 20575), (1646, 12975), (1730, 12345), (2469, 8650), (2595, 8230), (4115, 5190), (4325, 4938)]