28757659

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 39398400

約数和(自身を除く): 10640741

約数列:

[1, 7, 17, 19, 23, 49, 79, 119, 133, 161, 323, 391, 437, 553, 833, 931, 1127, 1343, 1501, 1817, 2261, 2737, 3059, 3871, 7429, 9401, 10507, 12719, 15827, 19159, 21413, 25517, 30889, 34523, 52003, 65807, 73549, 89033, 178619, 216223, 241661, 364021, 586891, 1250333, 1513561, 1691627, 4108237, 28757659]

約数ペア:

[(1, 28757659), (7, 4108237), (17, 1691627), (19, 1513561), (23, 1250333), (49, 586891), (79, 364021), (119, 241661), (133, 216223), (161, 178619), (323, 89033), (391, 73549), (437, 65807), (553, 52003), (833, 34523), (931, 30889), (1127, 25517), (1343, 21413), (1501, 19159), (1817, 15827), (2261, 12719), (2737, 10507), (3059, 9401), (3871, 7429)]