7240840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1153}}^1$

素因数の和:1321

約数の個数: 32

約数和(自身を含む): 16409880

約数和(自身を除く): 9169040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1153, 1256, 1570, 2306, 3140, 4612, 5765, 6280, 9224, 11530, 23060, 46120, 181021, 362042, 724084, 905105, 1448168, 1810210, 3620420, 7240840]

約数ペア:

[(1, 7240840), (2, 3620420), (4, 1810210), (5, 1448168), (8, 905105), (10, 724084), (20, 362042), (40, 181021), (157, 46120), (314, 23060), (628, 11530), (785, 9224), (1153, 6280), (1256, 5765), (1570, 4612), (2306, 3140)]