18974567

素因数分解:

${\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:418

約数の個数: 16

約数和(自身を含む): 20842272

約数和(自身を除く): 1867705

約数列:

[1, 17, 43, 101, 257, 731, 1717, 4343, 4369, 11051, 25957, 73831, 187867, 441269, 1116151, 18974567]

約数ペア:

[(1, 18974567), (17, 1116151), (43, 441269), (101, 187867), (257, 73831), (731, 25957), (1717, 11051), (4343, 4369)]