21211175

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{997}}^1$

素因数の和:1067

約数の個数: 24

約数和(自身を含む): 28215456

約数和(自身を除く): 7004281

約数列:

[1, 5, 23, 25, 37, 115, 185, 575, 851, 925, 997, 4255, 4985, 21275, 22931, 24925, 36889, 114655, 184445, 573275, 848447, 922225, 4242235, 21211175]

約数ペア:

[(1, 21211175), (5, 4242235), (23, 922225), (25, 848447), (37, 573275), (115, 184445), (185, 114655), (575, 36889), (851, 24925), (925, 22931), (997, 21275), (4255, 4985)]