21304820971

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{86951}}^1$

素因数の和:87075

約数の個数: 32

約数和(自身を含む): 27045550080

約数和(自身を除く): 5740729109

約数列:

[1, 7, 17, 29, 71, 119, 203, 493, 497, 1207, 2059, 3451, 8449, 14413, 35003, 86951, 245021, 608657, 1478167, 2521579, 6173521, 10347169, 17651053, 42866843, 43214647, 104949857, 179032109, 300067901, 734648999, 1253224763, 3043545853, 21304820971]

約数ペア:

[(1, 21304820971), (7, 3043545853), (17, 1253224763), (29, 734648999), (71, 300067901), (119, 179032109), (203, 104949857), (493, 43214647), (497, 42866843), (1207, 17651053), (2059, 10347169), (3451, 6173521), (8449, 2521579), (14413, 1478167), (35003, 608657), (86951, 245021)]