19985955

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{2053}}^1$

素因数の和:2131

約数の個数: 32

約数和(自身を含む): 35493120

約数和(自身を除く): 15507165

約数列:

[1, 3, 5, 11, 15, 33, 55, 59, 165, 177, 295, 649, 885, 1947, 2053, 3245, 6159, 9735, 10265, 22583, 30795, 67749, 112915, 121127, 338745, 363381, 605635, 1332397, 1816905, 3997191, 6661985, 19985955]

約数ペア:

[(1, 19985955), (3, 6661985), (5, 3997191), (11, 1816905), (15, 1332397), (33, 605635), (55, 363381), (59, 338745), (165, 121127), (177, 112915), (295, 67749), (649, 30795), (885, 22583), (1947, 10265), (2053, 9735), (3245, 6159)]