21087927

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3761}}^1$

素因数の和:3863

約数の個数: 24

約数和(自身を含む): 35212320

約数和(自身を除く): 14124393

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3761, 5607, 11283, 26327, 33849, 78981, 236943, 334729, 1004187, 2343103, 3012561, 7029309, 21087927]

約数ペア:

[(1, 21087927), (3, 7029309), (7, 3012561), (9, 2343103), (21, 1004187), (63, 334729), (89, 236943), (267, 78981), (623, 33849), (801, 26327), (1869, 11283), (3761, 5607)]