21167883

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 35324640

約数和(自身を除く): 14156757

約数列:

[1, 3, 9, 11, 29, 33, 73, 87, 99, 101, 219, 261, 303, 319, 657, 803, 909, 957, 1111, 2117, 2409, 2871, 2929, 3333, 6351, 7227, 7373, 8787, 9999, 19053, 22119, 23287, 26361, 32219, 66357, 69861, 81103, 96657, 209583, 213817, 243309, 289971, 641451, 729927, 1924353, 2351987, 7055961, 21167883]

約数ペア:

[(1, 21167883), (3, 7055961), (9, 2351987), (11, 1924353), (29, 729927), (33, 641451), (73, 289971), (87, 243309), (99, 213817), (101, 209583), (219, 96657), (261, 81103), (303, 69861), (319, 66357), (657, 32219), (803, 26361), (909, 23287), (957, 22119), (1111, 19053), (2117, 9999), (2409, 8787), (2871, 7373), (2929, 7227), (3333, 6351)]