18720249

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1993}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 26033664

約数和(自身を除く): 7313415

約数列:

[1, 3, 31, 93, 101, 303, 1993, 3131, 5979, 9393, 61783, 185349, 201293, 603879, 6240083, 18720249]

約数ペア:

[(1, 18720249), (3, 6240083), (31, 603879), (93, 201293), (101, 185349), (303, 61783), (1993, 9393), (3131, 5979)]