64668500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{9949}}^1$

素因数の和:9981

約数の個数: 48

約数和(自身を含む): 152115600

約数和(自身を除く): 87447100

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 9949, 19898, 39796, 49745, 99490, 129337, 198980, 248725, 258674, 497450, 517348, 646685, 994900, 1243625, 1293370, 2487250, 2586740, 3233425, 4974500, 6466850, 12933700, 16167125, 32334250, 64668500]

約数ペア:

[(1, 64668500), (2, 32334250), (4, 16167125), (5, 12933700), (10, 6466850), (13, 4974500), (20, 3233425), (25, 2586740), (26, 2487250), (50, 1293370), (52, 1243625), (65, 994900), (100, 646685), (125, 517348), (130, 497450), (250, 258674), (260, 248725), (325, 198980), (500, 129337), (650, 99490), (1300, 49745), (1625, 39796), (3250, 19898), (6500, 9949)]