81754820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{14243}}^1$

素因数の和:14300

約数の個数: 48

約数和(自身を含む): 201011328

約数和(自身を除く): 119256508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 5740, 14243, 28486, 56972, 71215, 99701, 142430, 199402, 284860, 398804, 498505, 583963, 997010, 1167926, 1994020, 2335852, 2919815, 4087741, 5839630, 8175482, 11679260, 16350964, 20438705, 40877410, 81754820]

約数ペア:

[(1, 81754820), (2, 40877410), (4, 20438705), (5, 16350964), (7, 11679260), (10, 8175482), (14, 5839630), (20, 4087741), (28, 2919815), (35, 2335852), (41, 1994020), (70, 1167926), (82, 997010), (140, 583963), (164, 498505), (205, 398804), (287, 284860), (410, 199402), (574, 142430), (820, 99701), (1148, 71215), (1435, 56972), (2870, 28486), (5740, 14243)]