31697240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11161}}^1$

素因数の和:11243

約数の個数: 32

約数和(自身を含む): 72329760

約数和(自身を除く): 40632520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11161, 22322, 44644, 55805, 89288, 111610, 223220, 446440, 792431, 1584862, 3169724, 3962155, 6339448, 7924310, 15848620, 31697240]

約数ペア:

[(1, 31697240), (2, 15848620), (4, 7924310), (5, 6339448), (8, 3962155), (10, 3169724), (20, 1584862), (40, 792431), (71, 446440), (142, 223220), (284, 111610), (355, 89288), (568, 55805), (710, 44644), (1420, 22322), (2840, 11161)]