19916780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76603}}^1$

素因数の和:76625

約数の個数: 24

約数和(自身を含む): 45043152

約数和(自身を除く): 25126372

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76603, 153206, 306412, 383015, 766030, 995839, 1532060, 1991678, 3983356, 4979195, 9958390, 19916780]

約数ペア:

[(1, 19916780), (2, 9958390), (4, 4979195), (5, 3983356), (10, 1991678), (13, 1532060), (20, 995839), (26, 766030), (52, 383015), (65, 306412), (130, 153206), (260, 76603)]