21210645

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{373}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 14980587

約数列:

[1, 3, 5, 15, 17, 51, 85, 223, 255, 373, 669, 1115, 1119, 1865, 3345, 3791, 5595, 6341, 11373, 18955, 19023, 31705, 56865, 83179, 95115, 249537, 415895, 1247685, 1414043, 4242129, 7070215, 21210645]

約数ペア:

[(1, 21210645), (3, 7070215), (5, 4242129), (15, 1414043), (17, 1247685), (51, 415895), (85, 249537), (223, 95115), (255, 83179), (373, 56865), (669, 31705), (1115, 19023), (1119, 18955), (1865, 11373), (3345, 6341), (3791, 5595)]