247780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{953}}^1$

素因数の和:975

約数の個数: 24

約数和(自身を含む): 560952

約数和(自身を除く): 313172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 953, 1906, 3812, 4765, 9530, 12389, 19060, 24778, 49556, 61945, 123890, 247780]

約数ペア:

[(1, 247780), (2, 123890), (4, 61945), (5, 49556), (10, 24778), (13, 19060), (20, 12389), (26, 9530), (52, 4765), (65, 3812), (130, 1906), (260, 953)]