20188089

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:139

約数の個数: 64

約数和(自身を含む): 34560000

約数和(自身を除く): 14371911

約数列:

[1, 3, 9, 19, 23, 27, 29, 57, 59, 69, 87, 171, 177, 207, 261, 437, 513, 531, 551, 621, 667, 783, 1121, 1311, 1357, 1593, 1653, 1711, 2001, 3363, 3933, 4071, 4959, 5133, 6003, 10089, 11799, 12213, 12673, 14877, 15399, 18009, 25783, 30267, 32509, 36639, 38019, 39353, 46197, 77349, 97527, 114057, 118059, 232047, 292581, 342171, 354177, 696141, 747707, 877743, 1062531, 2243121, 6729363, 20188089]

約数ペア:

[(1, 20188089), (3, 6729363), (9, 2243121), (19, 1062531), (23, 877743), (27, 747707), (29, 696141), (57, 354177), (59, 342171), (69, 292581), (87, 232047), (171, 118059), (177, 114057), (207, 97527), (261, 77349), (437, 46197), (513, 39353), (531, 38019), (551, 36639), (621, 32509), (667, 30267), (783, 25783), (1121, 18009), (1311, 15399), (1357, 14877), (1593, 12673), (1653, 12213), (1711, 11799), (2001, 10089), (3363, 6003), (3933, 5133), (4071, 4959)]