21313809

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14066991

約数列:

[1, 3, 9, 11, 33, 41, 59, 89, 99, 123, 177, 267, 369, 451, 531, 649, 801, 979, 1353, 1947, 2419, 2937, 3649, 4059, 5251, 5841, 7257, 8811, 10947, 15753, 21771, 26609, 32841, 40139, 47259, 57761, 79827, 120417, 173283, 215291, 239481, 361251, 519849, 645873, 1937619, 2368201, 7104603, 21313809]

約数ペア:

[(1, 21313809), (3, 7104603), (9, 2368201), (11, 1937619), (33, 645873), (41, 519849), (59, 361251), (89, 239481), (99, 215291), (123, 173283), (177, 120417), (267, 79827), (369, 57761), (451, 47259), (531, 40139), (649, 32841), (801, 26609), (979, 21771), (1353, 15753), (1947, 10947), (2419, 8811), (2937, 7257), (3649, 5841), (4059, 5251)]