31409680

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1993}}^1$

素因数の和:2203

約数の個数: 40

約数和(自身を含む): 73435032

約数和(自身を除く): 42025352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 1993, 3152, 3940, 3986, 7880, 7972, 9965, 15760, 15944, 19930, 31888, 39860, 79720, 159440, 392621, 785242, 1570484, 1963105, 3140968, 3926210, 6281936, 7852420, 15704840, 31409680]

約数ペア:

[(1, 31409680), (2, 15704840), (4, 7852420), (5, 6281936), (8, 3926210), (10, 3140968), (16, 1963105), (20, 1570484), (40, 785242), (80, 392621), (197, 159440), (394, 79720), (788, 39860), (985, 31888), (1576, 19930), (1970, 15944), (1993, 15760), (3152, 9965), (3940, 7972), (3986, 7880)]