16820755

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 7693805

約数列:

[1, 5, 7, 31, 35, 37, 155, 185, 217, 259, 419, 1085, 1147, 1295, 2095, 2933, 5735, 8029, 12989, 14665, 15503, 40145, 64945, 77515, 90923, 108521, 454615, 480593, 542605, 2402965, 3364151, 16820755]

約数ペア:

[(1, 16820755), (5, 3364151), (7, 2402965), (31, 542605), (35, 480593), (37, 454615), (155, 108521), (185, 90923), (217, 77515), (259, 64945), (419, 40145), (1085, 15503), (1147, 14665), (1295, 12989), (2095, 8029), (2933, 5735)]