20479810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{599}}^1$

素因数の和:882

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19436990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 263, 526, 599, 1198, 1315, 2630, 2995, 3419, 5990, 6838, 7787, 15574, 17095, 34190, 38935, 77870, 157537, 315074, 787685, 1575370, 2047981, 4095962, 10239905, 20479810]

約数ペア:

[(1, 20479810), (2, 10239905), (5, 4095962), (10, 2047981), (13, 1575370), (26, 787685), (65, 315074), (130, 157537), (263, 77870), (526, 38935), (599, 34190), (1198, 17095), (1315, 15574), (2630, 7787), (2995, 6838), (3419, 5990)]