18219850

素因数分解:

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

素因数の和:391

約数の個数: 48

約数和(自身を含む): 37381536

約数和(自身を除く): 19161686

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 157, 211, 275, 314, 422, 550, 785, 1055, 1570, 1727, 2110, 2321, 3454, 3925, 4642, 5275, 7850, 8635, 10550, 11605, 17270, 23210, 33127, 43175, 58025, 66254, 86350, 116050, 165635, 331270, 364397, 728794, 828175, 1656350, 1821985, 3643970, 9109925, 18219850]

約数ペア:

[(1, 18219850), (2, 9109925), (5, 3643970), (10, 1821985), (11, 1656350), (22, 828175), (25, 728794), (50, 364397), (55, 331270), (110, 165635), (157, 116050), (211, 86350), (275, 66254), (314, 58025), (422, 43175), (550, 33127), (785, 23210), (1055, 17270), (1570, 11605), (1727, 10550), (2110, 8635), (2321, 7850), (3454, 5275), (3925, 4642)]