21038810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 41899680

約数和(自身を除く): 20860870

約数列:

[1, 2, 5, 10, 13, 26, 59, 65, 118, 130, 169, 211, 295, 338, 422, 590, 767, 845, 1055, 1534, 1690, 2110, 2743, 3835, 5486, 7670, 9971, 12449, 13715, 19942, 24898, 27430, 35659, 49855, 62245, 71318, 99710, 124490, 161837, 178295, 323674, 356590, 809185, 1618370, 2103881, 4207762, 10519405, 21038810]

約数ペア:

[(1, 21038810), (2, 10519405), (5, 4207762), (10, 2103881), (13, 1618370), (26, 809185), (59, 356590), (65, 323674), (118, 178295), (130, 161837), (169, 124490), (211, 99710), (295, 71318), (338, 62245), (422, 49855), (590, 35659), (767, 27430), (845, 24898), (1055, 19942), (1534, 13715), (1690, 12449), (2110, 9971), (2743, 7670), (3835, 5486)]