28642551

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{193}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 45293568

約数和(自身を除く): 16651017

約数列:

[1, 3, 7, 21, 37, 111, 191, 193, 259, 573, 579, 777, 1337, 1351, 4011, 4053, 7067, 7141, 21201, 21423, 36863, 49469, 49987, 110589, 148407, 149961, 258041, 774123, 1363931, 4091793, 9547517, 28642551]

約数ペア:

[(1, 28642551), (3, 9547517), (7, 4091793), (21, 1363931), (37, 774123), (111, 258041), (191, 149961), (193, 148407), (259, 110589), (573, 49987), (579, 49469), (777, 36863), (1337, 21423), (1351, 21201), (4011, 7141), (4053, 7067)]