28256397

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 45386880

約数和(自身を除く): 17130483

約数列:

[1, 3, 13, 17, 23, 39, 51, 69, 109, 221, 289, 299, 327, 391, 663, 867, 897, 1173, 1417, 1853, 2507, 3757, 4251, 5083, 5559, 6647, 7521, 11271, 15249, 19941, 24089, 31501, 32591, 42619, 72267, 86411, 94503, 97773, 127857, 259233, 409513, 554047, 724523, 1228539, 1662141, 2173569, 9418799, 28256397]

約数ペア:

[(1, 28256397), (3, 9418799), (13, 2173569), (17, 1662141), (23, 1228539), (39, 724523), (51, 554047), (69, 409513), (109, 259233), (221, 127857), (289, 97773), (299, 94503), (327, 86411), (391, 72267), (663, 42619), (867, 32591), (897, 31501), (1173, 24089), (1417, 19941), (1853, 15249), (2507, 11271), (3757, 7521), (4251, 6647), (5083, 5559)]