21801177

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 33622400

約数和(自身を除く): 11821223

約数列:

[1, 3, 9, 27, 37, 111, 139, 157, 333, 417, 471, 999, 1251, 1413, 3753, 4239, 5143, 5809, 15429, 17427, 21823, 46287, 52281, 65469, 138861, 156843, 196407, 589221, 807451, 2422353, 7267059, 21801177]

約数ペア:

[(1, 21801177), (3, 7267059), (9, 2422353), (27, 807451), (37, 589221), (111, 196407), (139, 156843), (157, 138861), (333, 65469), (417, 52281), (471, 46287), (999, 21823), (1251, 17427), (1413, 15429), (3753, 5809), (4239, 5143)]