821481280

素因数分解:

$2^6\times 5^1\times {\mathrm{2567129}}^1$

素因数の和:2567146

約数の個数: 28

約数和(自身を含む): 1956153060

約数和(自身を除く): 1134671780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2567129, 5134258, 10268516, 12835645, 20537032, 25671290, 41074064, 51342580, 82148128, 102685160, 164296256, 205370320, 410740640, 821481280]

約数ペア:

[(1, 821481280), (2, 410740640), (4, 205370320), (5, 164296256), (8, 102685160), (10, 82148128), (16, 51342580), (20, 41074064), (32, 25671290), (40, 20537032), (64, 12835645), (80, 10268516), (160, 5134258), (320, 2567129)]