81559590

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20441}}^1$

素因数の和:20477

約数の個数: 64

約数和(自身を含む): 235491840

約数和(自身を除く): 153932250

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990, 20441, 40882, 61323, 102205, 122646, 143087, 204410, 286174, 306615, 388379, 429261, 613230, 715435, 776758, 858522, 1165137, 1430870, 1941895, 2146305, 2330274, 2718653, 3883790, 4292610, 5437306, 5825685, 8155959, 11651370, 13593265, 16311918, 27186530, 40779795, 81559590]

約数ペア:

[(1, 81559590), (2, 40779795), (3, 27186530), (5, 16311918), (6, 13593265), (7, 11651370), (10, 8155959), (14, 5825685), (15, 5437306), (19, 4292610), (21, 3883790), (30, 2718653), (35, 2330274), (38, 2146305), (42, 1941895), (57, 1430870), (70, 1165137), (95, 858522), (105, 776758), (114, 715435), (133, 613230), (190, 429261), (210, 388379), (266, 306615), (285, 286174), (399, 204410), (570, 143087), (665, 122646), (798, 102205), (1330, 61323), (1995, 40882), (3990, 20441)]