289753340

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{28463}}^1$

素因数の和:28981

約数の個数: 24

約数和(自身を含む): 609698880

約数和(自身を除く): 319945540

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 28463, 56926, 113852, 142315, 284630, 569260, 14487667, 28975334, 57950668, 72438335, 144876670, 289753340]

約数ペア:

[(1, 289753340), (2, 144876670), (4, 72438335), (5, 57950668), (10, 28975334), (20, 14487667), (509, 569260), (1018, 284630), (2036, 142315), (2545, 113852), (5090, 56926), (10180, 28463)]