20171248688

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{439729}}^1$

素因数の和:439845

約数の個数: 40

約数和(自身を含む): 40567730880

約数和(自身を除く): 20396482192

約数列:

[1, 2, 4, 8, 16, 47, 61, 94, 122, 188, 244, 376, 488, 752, 976, 2867, 5734, 11468, 22936, 45872, 439729, 879458, 1758916, 3517832, 7035664, 20667263, 26823469, 41334526, 53646938, 82669052, 107293876, 165338104, 214587752, 330676208, 429175504, 1260703043, 2521406086, 5042812172, 10085624344, 20171248688]

約数ペア:

[(1, 20171248688), (2, 10085624344), (4, 5042812172), (8, 2521406086), (16, 1260703043), (47, 429175504), (61, 330676208), (94, 214587752), (122, 165338104), (188, 107293876), (244, 82669052), (376, 53646938), (488, 41334526), (752, 26823469), (976, 20667263), (2867, 7035664), (5734, 3517832), (11468, 1758916), (22936, 879458), (45872, 439729)]