21040041

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 32034816

約数和(自身を除く): 10994775

約数列:

[1, 3, 11, 31, 33, 93, 131, 157, 341, 393, 471, 1023, 1441, 1727, 4061, 4323, 4867, 5181, 12183, 14601, 20567, 44671, 53537, 61701, 134013, 160611, 226237, 637577, 678711, 1912731, 7013347, 21040041]

約数ペア:

[(1, 21040041), (3, 7013347), (11, 1912731), (31, 678711), (33, 637577), (93, 226237), (131, 160611), (157, 134013), (341, 61701), (393, 53537), (471, 44671), (1023, 20567), (1441, 14601), (1727, 12183), (4061, 5181), (4323, 4867)]