16815519

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{631}}^1$

素因数の和:697

約数の個数: 40

約数和(自身を含む): 29365248

約数和(自身を除く): 12549729

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 631, 987, 1269, 1893, 2961, 3807, 4417, 5679, 8883, 13251, 17037, 26649, 29657, 39753, 51111, 88971, 119259, 207599, 266913, 357777, 622797, 800739, 1868391, 2402217, 5605173, 16815519]

約数ペア:

[(1, 16815519), (3, 5605173), (7, 2402217), (9, 1868391), (21, 800739), (27, 622797), (47, 357777), (63, 266913), (81, 207599), (141, 119259), (189, 88971), (329, 51111), (423, 39753), (567, 29657), (631, 26649), (987, 17037), (1269, 13251), (1893, 8883), (2961, 5679), (3807, 4417)]