81690196

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3571}}^1$

素因数の和:3644

約数の個数: 48

約数和(自身を含む): 176028160

約数和(自身を除く): 94337964

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 43, 76, 86, 133, 172, 266, 301, 532, 602, 817, 1204, 1634, 3268, 3571, 5719, 7142, 11438, 14284, 22876, 24997, 49994, 67849, 99988, 135698, 153553, 271396, 307106, 474943, 614212, 949886, 1074871, 1899772, 2149742, 2917507, 4299484, 5835014, 11670028, 20422549, 40845098, 81690196]

約数ペア:

[(1, 81690196), (2, 40845098), (4, 20422549), (7, 11670028), (14, 5835014), (19, 4299484), (28, 2917507), (38, 2149742), (43, 1899772), (76, 1074871), (86, 949886), (133, 614212), (172, 474943), (266, 307106), (301, 271396), (532, 153553), (602, 135698), (817, 99988), (1204, 67849), (1634, 49994), (3268, 24997), (3571, 22876), (5719, 14284), (7142, 11438)]