7242920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4211}}^1$

素因数の和:4265

約数の個数: 32

約数和(自身を含む): 16679520

約数和(自身を除く): 9436600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 4211, 8422, 16844, 21055, 33688, 42110, 84220, 168440, 181073, 362146, 724292, 905365, 1448584, 1810730, 3621460, 7242920]

約数ペア:

[(1, 7242920), (2, 3621460), (4, 1810730), (5, 1448584), (8, 905365), (10, 724292), (20, 362146), (40, 181073), (43, 168440), (86, 84220), (172, 42110), (215, 33688), (344, 21055), (430, 16844), (860, 8422), (1720, 4211)]