8580220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 20135808

約数和(自身を除く): 11555588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 907, 946, 1814, 1892, 2365, 3628, 4535, 4730, 9070, 9460, 9977, 18140, 19954, 39001, 39908, 49885, 78002, 99770, 156004, 195005, 199540, 390010, 429011, 780020, 858022, 1716044, 2145055, 4290110, 8580220]

約数ペア:

[(1, 8580220), (2, 4290110), (4, 2145055), (5, 1716044), (10, 858022), (11, 780020), (20, 429011), (22, 390010), (43, 199540), (44, 195005), (55, 156004), (86, 99770), (110, 78002), (172, 49885), (215, 39908), (220, 39001), (430, 19954), (473, 18140), (860, 9977), (907, 9460), (946, 9070), (1814, 4730), (1892, 4535), (2365, 3628)]