205730240

素因数分解:

$2^6\times 5^1\times {\mathrm{642907}}^1$

素因数の和:642924

約数の個数: 28

約数和(自身を含む): 489895896

約数和(自身を除く): 284165656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 642907, 1285814, 2571628, 3214535, 5143256, 6429070, 10286512, 12858140, 20573024, 25716280, 41146048, 51432560, 102865120, 205730240]

約数ペア:

[(1, 205730240), (2, 102865120), (4, 51432560), (5, 41146048), (8, 25716280), (10, 20573024), (16, 12858140), (20, 10286512), (32, 6429070), (40, 5143256), (64, 3214535), (80, 2571628), (160, 1285814), (320, 642907)]