31401800

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{797}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 73471860

約数和(自身を除く): 42070060

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 200, 394, 788, 797, 985, 1576, 1594, 1970, 3188, 3940, 3985, 4925, 6376, 7880, 7970, 9850, 15940, 19700, 19925, 31880, 39400, 39850, 79700, 157009, 159400, 314018, 628036, 785045, 1256072, 1570090, 3140180, 3925225, 6280360, 7850450, 15700900, 31401800]

約数ペア:

[(1, 31401800), (2, 15700900), (4, 7850450), (5, 6280360), (8, 3925225), (10, 3140180), (20, 1570090), (25, 1256072), (40, 785045), (50, 628036), (100, 314018), (197, 159400), (200, 157009), (394, 79700), (788, 39850), (797, 39400), (985, 31880), (1576, 19925), (1594, 19700), (1970, 15940), (3188, 9850), (3940, 7970), (3985, 7880), (4925, 6376)]