21807154

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{1669}}^1$

素因数の和:1857

約数の個数: 16

約数和(自身を含む): 33667200

約数和(自身を除く): 11860046

約数列:

[1, 2, 47, 94, 139, 278, 1669, 3338, 6533, 13066, 78443, 156886, 231991, 463982, 10903577, 21807154]

約数ペア:

[(1, 21807154), (2, 10903577), (47, 463982), (94, 231991), (139, 156886), (278, 78443), (1669, 13066), (3338, 6533)]