19181195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 26749440

約数和(自身を除く): 7568245

約数列:

[1, 5, 11, 23, 55, 59, 115, 253, 257, 295, 649, 1265, 1285, 1357, 2827, 3245, 5911, 6785, 14135, 14927, 15163, 29555, 65021, 74635, 75815, 166793, 325105, 348749, 833965, 1743745, 3836239, 19181195]

約数ペア:

[(1, 19181195), (5, 3836239), (11, 1743745), (23, 833965), (55, 348749), (59, 325105), (115, 166793), (253, 75815), (257, 74635), (295, 65021), (649, 29555), (1265, 15163), (1285, 14927), (1357, 14135), (2827, 6785), (3245, 5911)]