21489669

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{503}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 32078592

約数和(自身を除く): 10588923

約数列:

[1, 3, 9, 47, 101, 141, 303, 423, 503, 909, 1509, 4527, 4747, 14241, 23641, 42723, 50803, 70923, 152409, 212769, 457227, 2387741, 7163223, 21489669]

約数ペア:

[(1, 21489669), (3, 7163223), (9, 2387741), (47, 457227), (101, 212769), (141, 152409), (303, 70923), (423, 50803), (503, 42723), (909, 23641), (1509, 14241), (4527, 4747)]