31931080

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5743}}^1$

素因数の和:5893

約数の個数: 32

約数和(自身を含む): 72374400

約数和(自身を除く): 40443320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 5743, 11486, 22972, 28715, 45944, 57430, 114860, 229720, 798277, 1596554, 3193108, 3991385, 6386216, 7982770, 15965540, 31931080]

約数ペア:

[(1, 31931080), (2, 15965540), (4, 7982770), (5, 6386216), (8, 3991385), (10, 3193108), (20, 1596554), (40, 798277), (139, 229720), (278, 114860), (556, 57430), (695, 45944), (1112, 28715), (1390, 22972), (2780, 11486), (5560, 5743)]