81957519

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 140175360

約数和(自身を除く): 58217841

約数列:

[1, 3, 7, 9, 21, 47, 63, 89, 141, 267, 311, 329, 423, 623, 801, 933, 987, 1869, 2177, 2799, 2961, 4183, 5607, 6531, 12549, 14617, 19593, 27679, 29281, 37647, 43851, 83037, 87843, 102319, 131553, 193753, 249111, 263529, 306957, 581259, 920871, 1300913, 1743777, 3902739, 9106391, 11708217, 27319173, 81957519]

約数ペア:

[(1, 81957519), (3, 27319173), (7, 11708217), (9, 9106391), (21, 3902739), (47, 1743777), (63, 1300913), (89, 920871), (141, 581259), (267, 306957), (311, 263529), (329, 249111), (423, 193753), (623, 131553), (801, 102319), (933, 87843), (987, 83037), (1869, 43851), (2177, 37647), (2799, 29281), (2961, 27679), (4183, 19593), (5607, 14617), (6531, 12549)]