345320

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 793800

約数和(自身を除く): 448480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 97, 178, 194, 356, 388, 445, 485, 712, 776, 890, 970, 1780, 1940, 3560, 3880, 8633, 17266, 34532, 43165, 69064, 86330, 172660, 345320]

約数ペア:

[(1, 345320), (2, 172660), (4, 86330), (5, 69064), (8, 43165), (10, 34532), (20, 17266), (40, 8633), (89, 3880), (97, 3560), (178, 1940), (194, 1780), (356, 970), (388, 890), (445, 776), (485, 712)]