21330805

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{937}}^1$

素因数の和:1128

約数の個数: 16

約数和(自身を含む): 26676720

約数和(自身を除く): 5345915

約数列:

[1, 5, 29, 145, 157, 785, 937, 4553, 4685, 22765, 27173, 135865, 147109, 735545, 4266161, 21330805]

約数ペア:

[(1, 21330805), (5, 4266161), (29, 735545), (145, 147109), (157, 135865), (785, 27173), (937, 22765), (4553, 4685)]