27978005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1301}}^1$

素因数の和:1357

約数の個数: 32

約数和(自身を含む): 40497408

約数和(自身を除く): 12519403

約数列:

[1, 5, 11, 17, 23, 55, 85, 115, 187, 253, 391, 935, 1265, 1301, 1955, 4301, 6505, 14311, 21505, 22117, 29923, 71555, 110585, 149615, 243287, 329153, 508691, 1216435, 1645765, 2543455, 5595601, 27978005]

約数ペア:

[(1, 27978005), (5, 5595601), (11, 2543455), (17, 1645765), (23, 1216435), (55, 508691), (85, 329153), (115, 243287), (187, 149615), (253, 110585), (391, 71555), (935, 29923), (1265, 22117), (1301, 21505), (1955, 14311), (4301, 6505)]