18756423

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 33336576

約数和(自身を除く): 14580153

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 83, 119, 153, 211, 249, 357, 581, 633, 747, 1071, 1411, 1477, 1743, 1899, 3587, 4233, 4431, 5229, 9877, 10761, 12699, 13293, 17513, 25109, 29631, 32283, 52539, 75327, 88893, 122591, 157617, 225981, 297721, 367773, 893163, 1103319, 2084047, 2679489, 6252141, 18756423]

約数ペア:

[(1, 18756423), (3, 6252141), (7, 2679489), (9, 2084047), (17, 1103319), (21, 893163), (51, 367773), (63, 297721), (83, 225981), (119, 157617), (153, 122591), (211, 88893), (249, 75327), (357, 52539), (581, 32283), (633, 29631), (747, 25109), (1071, 17513), (1411, 13293), (1477, 12699), (1743, 10761), (1899, 9877), (3587, 5229), (4233, 4431)]