261198339

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{20549}}^1$

素因数の和:20794

約数の個数: 16

約数和(自身を含む): 368256000

約数和(自身を除く): 107057661

約数列:

[1, 3, 19, 57, 223, 669, 4237, 12711, 20549, 61647, 390431, 1171293, 4582427, 13747281, 87066113, 261198339]

約数ペア:

[(1, 261198339), (3, 87066113), (19, 13747281), (57, 4582427), (223, 1171293), (669, 390431), (4237, 61647), (12711, 20549)]