641235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 1216512

約数和(自身を除く): 575277

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 197, 217, 465, 591, 651, 985, 1085, 1379, 2955, 3255, 4137, 6107, 6895, 18321, 20685, 30535, 42749, 91605, 128247, 213745, 641235]

約数ペア:

[(1, 641235), (3, 213745), (5, 128247), (7, 91605), (15, 42749), (21, 30535), (31, 20685), (35, 18321), (93, 6895), (105, 6107), (155, 4137), (197, 3255), (217, 2955), (465, 1379), (591, 1085), (651, 985)]