21961175

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{659}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 28807680

約数和(自身を除く): 6846505

約数列:

[1, 5, 25, 31, 43, 155, 215, 659, 775, 1075, 1333, 3295, 6665, 16475, 20429, 28337, 33325, 102145, 141685, 510725, 708425, 878447, 4392235, 21961175]

約数ペア:

[(1, 21961175), (5, 4392235), (25, 878447), (31, 708425), (43, 510725), (155, 141685), (215, 102145), (659, 33325), (775, 28337), (1075, 20429), (1333, 16475), (3295, 6665)]