7287940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 16881984

約数和(自身を除く): 9594044

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 211, 220, 314, 422, 628, 785, 844, 1055, 1570, 1727, 2110, 2321, 3140, 3454, 4220, 4642, 6908, 8635, 9284, 11605, 17270, 23210, 33127, 34540, 46420, 66254, 132508, 165635, 331270, 364397, 662540, 728794, 1457588, 1821985, 3643970, 7287940]

約数ペア:

[(1, 7287940), (2, 3643970), (4, 1821985), (5, 1457588), (10, 728794), (11, 662540), (20, 364397), (22, 331270), (44, 165635), (55, 132508), (110, 66254), (157, 46420), (211, 34540), (220, 33127), (314, 23210), (422, 17270), (628, 11605), (785, 9284), (844, 8635), (1055, 6908), (1570, 4642), (1727, 4220), (2110, 3454), (2321, 3140)]