19991218

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1459}}^1$

素因数の和:1522

約数の個数: 32

約数和(自身を含む): 35320320

約数和(自身を除く): 15329102

約数列:

[1, 2, 13, 17, 26, 31, 34, 62, 221, 403, 442, 527, 806, 1054, 1459, 2918, 6851, 13702, 18967, 24803, 37934, 45229, 49606, 90458, 322439, 587977, 644878, 768893, 1175954, 1537786, 9995609, 19991218]

約数ペア:

[(1, 19991218), (2, 9995609), (13, 1537786), (17, 1175954), (26, 768893), (31, 644878), (34, 587977), (62, 322439), (221, 90458), (403, 49606), (442, 45229), (527, 37934), (806, 24803), (1054, 18967), (1459, 13702), (2918, 6851)]