20731295

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1619}}^1$

素因数の和:1834

約数の個数: 16

約数和(自身を含む): 26943840

約数和(自身を除く): 6212545

約数列:

[1, 5, 13, 65, 197, 985, 1619, 2561, 8095, 12805, 21047, 105235, 318943, 1594715, 4146259, 20731295]

約数ペア:

[(1, 20731295), (5, 4146259), (13, 1594715), (65, 318943), (197, 105235), (985, 21047), (1619, 12805), (2561, 8095)]