8020840

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{839}}^1$

素因数の和:1089

約数の個数: 32

約数和(自身を含む): 18144000

約数和(自身を除く): 10123160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 839, 956, 1195, 1678, 1912, 2390, 3356, 4195, 4780, 6712, 8390, 9560, 16780, 33560, 200521, 401042, 802084, 1002605, 1604168, 2005210, 4010420, 8020840]

約数ペア:

[(1, 8020840), (2, 4010420), (4, 2005210), (5, 1604168), (8, 1002605), (10, 802084), (20, 401042), (40, 200521), (239, 33560), (478, 16780), (839, 9560), (956, 8390), (1195, 6712), (1678, 4780), (1912, 4195), (2390, 3356)]