19903325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1303}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 27164928

約数和(自身を除く): 7261603

約数列:

[1, 5, 13, 25, 47, 65, 235, 325, 611, 1175, 1303, 3055, 6515, 15275, 16939, 32575, 61241, 84695, 306205, 423475, 796133, 1531025, 3980665, 19903325]

約数ペア:

[(1, 19903325), (5, 3980665), (13, 1531025), (25, 796133), (47, 423475), (65, 306205), (235, 84695), (325, 61241), (611, 32575), (1175, 16939), (1303, 15275), (3055, 6515)]