18557883

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 28814400

約数和(自身を除く): 10256517

約数列:

[1, 3, 9, 27, 29, 87, 137, 173, 261, 411, 519, 783, 1233, 1557, 3699, 3973, 4671, 5017, 11919, 15051, 23701, 35757, 45153, 71103, 107271, 135459, 213309, 639927, 687329, 2061987, 6185961, 18557883]

約数ペア:

[(1, 18557883), (3, 6185961), (9, 2061987), (27, 687329), (29, 639927), (87, 213309), (137, 135459), (173, 107271), (261, 71103), (411, 45153), (519, 35757), (783, 23701), (1233, 15051), (1557, 11919), (3699, 5017), (3973, 4671)]