18885905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3259}}^1$

素因数の和:3344

約数の個数: 16

約数和(自身を含む): 24254400

約数和(自身を除く): 5368495

約数列:

[1, 5, 19, 61, 95, 305, 1159, 3259, 5795, 16295, 61921, 198799, 309605, 993995, 3777181, 18885905]

約数ペア:

[(1, 18885905), (5, 3777181), (19, 993995), (61, 309605), (95, 198799), (305, 61921), (1159, 16295), (3259, 5795)]