20666828

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8111}}^1$

素因数の和:8142

約数の個数: 36

約数和(自身を含む): 45313632

約数和(自身を除く): 24646804

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8111, 16222, 32444, 56777, 105443, 113554, 210886, 227108, 397439, 421772, 738101, 794878, 1476202, 1589756, 2952404, 5166707, 10333414, 20666828]

約数ペア:

[(1, 20666828), (2, 10333414), (4, 5166707), (7, 2952404), (13, 1589756), (14, 1476202), (26, 794878), (28, 738101), (49, 421772), (52, 397439), (91, 227108), (98, 210886), (182, 113554), (196, 105443), (364, 56777), (637, 32444), (1274, 16222), (2548, 8111)]