20180264

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3181}}^1$

素因数の和:3261

約数の個数: 32

約数和(自身を含む): 41429640

約数和(自身を除く): 21249376

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3181, 6344, 6362, 12724, 25448, 41353, 82706, 165412, 194041, 330824, 388082, 776164, 1552328, 2522533, 5045066, 10090132, 20180264]

約数ペア:

[(1, 20180264), (2, 10090132), (4, 5045066), (8, 2522533), (13, 1552328), (26, 776164), (52, 388082), (61, 330824), (104, 194041), (122, 165412), (244, 82706), (488, 41353), (793, 25448), (1586, 12724), (3172, 6362), (3181, 6344)]