21956649

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 35979264

約数和(自身を除く): 14022615

約数列:

[1, 3, 11, 13, 31, 33, 39, 93, 127, 143, 169, 341, 381, 403, 429, 507, 1023, 1209, 1397, 1651, 1859, 3937, 4191, 4433, 4953, 5239, 5577, 11811, 13299, 15717, 18161, 21463, 43307, 51181, 54483, 57629, 64389, 129921, 153543, 172887, 236093, 562991, 665353, 708279, 1688973, 1996059, 7318883, 21956649]

約数ペア:

[(1, 21956649), (3, 7318883), (11, 1996059), (13, 1688973), (31, 708279), (33, 665353), (39, 562991), (93, 236093), (127, 172887), (143, 153543), (169, 129921), (341, 64389), (381, 57629), (403, 54483), (429, 51181), (507, 43307), (1023, 21463), (1209, 18161), (1397, 15717), (1651, 13299), (1859, 11811), (3937, 5577), (4191, 5239), (4433, 4953)]