168990220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{172439}}^1$

素因数の和:172462

約数の個数: 36

約数和(自身を含む): 412821360

約数和(自身を除く): 243831140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 172439, 344878, 689756, 862195, 1207073, 1724390, 2414146, 3448780, 4828292, 6035365, 8449511, 12070730, 16899022, 24141460, 33798044, 42247555, 84495110, 168990220]

約数ペア:

[(1, 168990220), (2, 84495110), (4, 42247555), (5, 33798044), (7, 24141460), (10, 16899022), (14, 12070730), (20, 8449511), (28, 6035365), (35, 4828292), (49, 3448780), (70, 2414146), (98, 1724390), (140, 1207073), (196, 862195), (245, 689756), (490, 344878), (980, 172439)]