21647886

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 48232944

約数和(自身を除く): 26585058

約数列:

[1, 2, 3, 6, 13, 26, 37, 39, 74, 78, 111, 169, 222, 338, 481, 507, 577, 962, 1014, 1154, 1443, 1731, 2886, 3462, 6253, 7501, 12506, 15002, 18759, 21349, 22503, 37518, 42698, 45006, 64047, 97513, 128094, 195026, 277537, 292539, 555074, 585078, 832611, 1665222, 3607981, 7215962, 10823943, 21647886]

約数ペア:

[(1, 21647886), (2, 10823943), (3, 7215962), (6, 3607981), (13, 1665222), (26, 832611), (37, 585078), (39, 555074), (74, 292539), (78, 277537), (111, 195026), (169, 128094), (222, 97513), (338, 64047), (481, 45006), (507, 42698), (577, 37518), (962, 22503), (1014, 21349), (1154, 18759), (1443, 15002), (1731, 12506), (2886, 7501), (3462, 6253)]