21459207

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{577}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 37953792

約数和(自身を除く): 16494585

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 69, 77, 147, 161, 231, 253, 483, 539, 577, 759, 1127, 1617, 1731, 1771, 3381, 4039, 5313, 6347, 12117, 12397, 13271, 19041, 28273, 37191, 39813, 44429, 84819, 92897, 133287, 145981, 278691, 311003, 437943, 650279, 933009, 1021867, 1950837, 3065601, 7153069, 21459207]

約数ペア:

[(1, 21459207), (3, 7153069), (7, 3065601), (11, 1950837), (21, 1021867), (23, 933009), (33, 650279), (49, 437943), (69, 311003), (77, 278691), (147, 145981), (161, 133287), (231, 92897), (253, 84819), (483, 44429), (539, 39813), (577, 37191), (759, 28273), (1127, 19041), (1617, 13271), (1731, 12397), (1771, 12117), (3381, 6347), (4039, 5313)]