20780175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21313}}^1$

素因数の和:21339

約数の個数: 24

約数和(自身を含む): 37001104

約数和(自身を除く): 16220929

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21313, 63939, 106565, 277069, 319695, 532825, 831207, 1385345, 1598475, 4156035, 6926725, 20780175]

約数ペア:

[(1, 20780175), (3, 6926725), (5, 4156035), (13, 1598475), (15, 1385345), (25, 831207), (39, 532825), (65, 319695), (75, 277069), (195, 106565), (325, 63939), (975, 21313)]