20658710

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:788

約数の個数: 32

約数和(自身を含む): 38817792

約数和(自身を除く): 18159082

約数列:

[1, 2, 5, 10, 31, 62, 103, 155, 206, 310, 515, 647, 1030, 1294, 3193, 3235, 6386, 6470, 15965, 20057, 31930, 40114, 66641, 100285, 133282, 200570, 333205, 666410, 2065871, 4131742, 10329355, 20658710]

約数ペア:

[(1, 20658710), (2, 10329355), (5, 4131742), (10, 2065871), (31, 666410), (62, 333205), (103, 200570), (155, 133282), (206, 100285), (310, 66641), (515, 40114), (647, 31930), (1030, 20057), (1294, 15965), (3193, 6470), (3235, 6386)]