19428705

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 36138960

約数和(自身を除く): 16710255

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 109, 153, 233, 255, 327, 545, 699, 765, 981, 1165, 1635, 1853, 2097, 3495, 3961, 4905, 5559, 9265, 10485, 11883, 16677, 19805, 25397, 27795, 35649, 59415, 76191, 83385, 126985, 178245, 228573, 380955, 431749, 1142865, 1295247, 2158745, 3885741, 6476235, 19428705]

約数ペア:

[(1, 19428705), (3, 6476235), (5, 3885741), (9, 2158745), (15, 1295247), (17, 1142865), (45, 431749), (51, 380955), (85, 228573), (109, 178245), (153, 126985), (233, 83385), (255, 76191), (327, 59415), (545, 35649), (699, 27795), (765, 25397), (981, 19805), (1165, 16677), (1635, 11883), (1853, 10485), (2097, 9265), (3495, 5559), (3961, 4905)]