8388215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 12096000

約数和(自身を除く): 3707785

約数列:

[1, 5, 11, 19, 23, 55, 95, 115, 209, 253, 349, 437, 1045, 1265, 1745, 2185, 3839, 4807, 6631, 8027, 19195, 24035, 33155, 40135, 72941, 88297, 152513, 364705, 441485, 762565, 1677643, 8388215]

約数ペア:

[(1, 8388215), (5, 1677643), (11, 762565), (19, 441485), (23, 364705), (55, 152513), (95, 88297), (115, 72941), (209, 40135), (253, 33155), (349, 24035), (437, 19195), (1045, 8027), (1265, 6631), (1745, 4807), (2185, 3839)]