81352180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44699}}^1$

素因数の和:44728

約数の個数: 48

約数和(自身を含む): 210268800

約数和(自身を除く): 128916620

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 44699, 89398, 178796, 223495, 312893, 446990, 581087, 625786, 893980, 1162174, 1251572, 1564465, 2324348, 2905435, 3128930, 4067609, 5810870, 6257860, 8135218, 11621740, 16270436, 20338045, 40676090, 81352180]

約数ペア:

[(1, 81352180), (2, 40676090), (4, 20338045), (5, 16270436), (7, 11621740), (10, 8135218), (13, 6257860), (14, 5810870), (20, 4067609), (26, 3128930), (28, 2905435), (35, 2324348), (52, 1564465), (65, 1251572), (70, 1162174), (91, 893980), (130, 625786), (140, 581087), (182, 446990), (260, 312893), (364, 223495), (455, 178796), (910, 89398), (1820, 44699)]