19915826

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:570

約数の個数: 32

約数和(自身を含む): 35650560

約数和(自身を除く): 15734734

約数列:

[1, 2, 7, 14, 31, 62, 109, 217, 218, 421, 434, 763, 842, 1526, 2947, 3379, 5894, 6758, 13051, 23653, 26102, 45889, 47306, 91357, 91778, 182714, 321223, 642446, 1422559, 2845118, 9957913, 19915826]

約数ペア:

[(1, 19915826), (2, 9957913), (7, 2845118), (14, 1422559), (31, 642446), (62, 321223), (109, 182714), (217, 91778), (218, 91357), (421, 47306), (434, 45889), (763, 26102), (842, 23653), (1526, 13051), (2947, 6758), (3379, 5894)]