7864840

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{557}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 17777880

約数和(自身を除く): 9913040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 557, 706, 1114, 1412, 1765, 2228, 2785, 2824, 3530, 4456, 5570, 7060, 11140, 14120, 22280, 196621, 393242, 786484, 983105, 1572968, 1966210, 3932420, 7864840]

約数ペア:

[(1, 7864840), (2, 3932420), (4, 1966210), (5, 1572968), (8, 983105), (10, 786484), (20, 393242), (40, 196621), (353, 22280), (557, 14120), (706, 11140), (1114, 7060), (1412, 5570), (1765, 4456), (2228, 3530), (2785, 2824)]