30928840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7507}}^1$

素因数の和:7621

約数の個数: 32

約数和(自身を含む): 70274880

約数和(自身を除く): 39346040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7507, 15014, 30028, 37535, 60056, 75070, 150140, 300280, 773221, 1546442, 3092884, 3866105, 6185768, 7732210, 15464420, 30928840]

約数ペア:

[(1, 30928840), (2, 15464420), (4, 7732210), (5, 6185768), (8, 3866105), (10, 3092884), (20, 1546442), (40, 773221), (103, 300280), (206, 150140), (412, 75070), (515, 60056), (824, 37535), (1030, 30028), (2060, 15014), (4120, 7507)]