21680826087

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1\times {\mathrm{17053}}^1$

素因数の和:17427

約数の個数: 32

約数和(自身を含む): 31045920192

約数和(自身を除く): 9365094105

約数列:

[1, 3, 17, 51, 97, 257, 291, 771, 1649, 4369, 4947, 13107, 17053, 24929, 51159, 74787, 289901, 423793, 869703, 1271379, 1654141, 4382621, 4962423, 13147863, 28120397, 74504557, 84361191, 223513671, 425114237, 1275342711, 7226942029, 21680826087]

約数ペア:

[(1, 21680826087), (3, 7226942029), (17, 1275342711), (51, 425114237), (97, 223513671), (257, 84361191), (291, 74504557), (771, 28120397), (1649, 13147863), (4369, 4962423), (4947, 4382621), (13107, 1654141), (17053, 1271379), (24929, 869703), (51159, 423793), (74787, 289901)]