20920845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1231}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 36900864

約数和(自身を除く): 15980019

約数列:

[1, 3, 5, 11, 15, 33, 55, 103, 165, 309, 515, 1133, 1231, 1545, 3399, 3693, 5665, 6155, 13541, 16995, 18465, 40623, 67705, 126793, 203115, 380379, 633965, 1394723, 1901895, 4184169, 6973615, 20920845]

約数ペア:

[(1, 20920845), (3, 6973615), (5, 4184169), (11, 1901895), (15, 1394723), (33, 633965), (55, 380379), (103, 203115), (165, 126793), (309, 67705), (515, 40623), (1133, 18465), (1231, 16995), (1545, 13541), (3399, 6155), (3693, 5665)]