216557680

素因数分解:

$2^4\times 5^1\times {\mathrm{2706971}}^1$

素因数の和:2706984

約数の個数: 20

約数和(自身を含む): 503496792

約数和(自身を除く): 286939112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2706971, 5413942, 10827884, 13534855, 21655768, 27069710, 43311536, 54139420, 108278840, 216557680]

約数ペア:

[(1, 216557680), (2, 108278840), (4, 54139420), (5, 43311536), (8, 27069710), (10, 21655768), (16, 13534855), (20, 10827884), (40, 5413942), (80, 2706971)]