21155868

素因数分解:

$2^2\times 3^2\times {\mathrm{593}}^1\times {\mathrm{991}}^1$

素因数の和:1594

約数の個数: 36

約数和(自身を含む): 53621568

約数和(自身を除く): 32465700

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 593, 991, 1186, 1779, 1982, 2372, 2973, 3558, 3964, 5337, 5946, 7116, 8919, 10674, 11892, 17838, 21348, 35676, 587663, 1175326, 1762989, 2350652, 3525978, 5288967, 7051956, 10577934, 21155868]

約数ペア:

[(1, 21155868), (2, 10577934), (3, 7051956), (4, 5288967), (6, 3525978), (9, 2350652), (12, 1762989), (18, 1175326), (36, 587663), (593, 35676), (991, 21348), (1186, 17838), (1779, 11892), (1982, 10674), (2372, 8919), (2973, 7116), (3558, 5946), (3964, 5337)]