18862905

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{421}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 31599360

約数和(自身を除く): 12736455

約数列:

[1, 3, 5, 15, 29, 87, 103, 145, 309, 421, 435, 515, 1263, 1545, 2105, 2987, 6315, 8961, 12209, 14935, 36627, 43363, 44805, 61045, 130089, 183135, 216815, 650445, 1257527, 3772581, 6287635, 18862905]

約数ペア:

[(1, 18862905), (3, 6287635), (5, 3772581), (15, 1257527), (29, 650445), (87, 216815), (103, 183135), (145, 130089), (309, 61045), (421, 44805), (435, 43363), (515, 36627), (1263, 14935), (1545, 12209), (2105, 8961), (2987, 6315)]