51715880

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2017}}^1$

素因数の和:2669

約数の個数: 32

約数和(自身を含む): 116600040

約数和(自身を除く): 64884160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2017, 2564, 3205, 4034, 5128, 6410, 8068, 10085, 12820, 16136, 20170, 25640, 40340, 80680, 1292897, 2585794, 5171588, 6464485, 10343176, 12928970, 25857940, 51715880]

約数ペア:

[(1, 51715880), (2, 25857940), (4, 12928970), (5, 10343176), (8, 6464485), (10, 5171588), (20, 2585794), (40, 1292897), (641, 80680), (1282, 40340), (2017, 25640), (2564, 20170), (3205, 16136), (4034, 12820), (5128, 10085), (6410, 8068)]