65641280

素因数分解:

$2^6\times 5^1\times {\mathrm{205129}}^1$

素因数の和:205146

約数の個数: 28

約数和(自身を含む): 156309060

約数和(自身を除く): 90667780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 205129, 410258, 820516, 1025645, 1641032, 2051290, 3282064, 4102580, 6564128, 8205160, 13128256, 16410320, 32820640, 65641280]

約数ペア:

[(1, 65641280), (2, 32820640), (4, 16410320), (5, 13128256), (8, 8205160), (10, 6564128), (16, 4102580), (20, 3282064), (32, 2051290), (40, 1641032), (64, 1025645), (80, 820516), (160, 410258), (320, 205129)]