287082920

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{21683}}^1$

素因数の和:22025

約数の個数: 32

約数和(自身を含む): 647917920

約数和(自身を除く): 360835000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2648, 3310, 6620, 13240, 21683, 43366, 86732, 108415, 173464, 216830, 433660, 867320, 7177073, 14354146, 28708292, 35885365, 57416584, 71770730, 143541460, 287082920]

約数ペア:

[(1, 287082920), (2, 143541460), (4, 71770730), (5, 57416584), (8, 35885365), (10, 28708292), (20, 14354146), (40, 7177073), (331, 867320), (662, 433660), (1324, 216830), (1655, 173464), (2648, 108415), (3310, 86732), (6620, 43366), (13240, 21683)]