71688440

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{13681}}^1$

素因数の和:13823

約数の個数: 32

約数和(自身を含む): 162542160

約数和(自身を除く): 90853720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 13681, 27362, 54724, 68405, 109448, 136810, 273620, 547240, 1792211, 3584422, 7168844, 8961055, 14337688, 17922110, 35844220, 71688440]

約数ペア:

[(1, 71688440), (2, 35844220), (4, 17922110), (5, 14337688), (8, 8961055), (10, 7168844), (20, 3584422), (40, 1792211), (131, 547240), (262, 273620), (524, 136810), (655, 109448), (1048, 68405), (1310, 54724), (2620, 27362), (5240, 13681)]