20969168

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{283}}^1\times {\mathrm{421}}^1$

素因数の和:723

約数の個数: 40

約数和(自身を含む): 44583456

約数和(自身を除く): 23614288

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 283, 421, 566, 842, 1132, 1684, 2264, 3113, 3368, 4528, 4631, 6226, 6736, 9262, 12452, 18524, 24904, 37048, 49808, 74096, 119143, 238286, 476572, 953144, 1310573, 1906288, 2621146, 5242292, 10484584, 20969168]

約数ペア:

[(1, 20969168), (2, 10484584), (4, 5242292), (8, 2621146), (11, 1906288), (16, 1310573), (22, 953144), (44, 476572), (88, 238286), (176, 119143), (283, 74096), (421, 49808), (566, 37048), (842, 24904), (1132, 18524), (1684, 12452), (2264, 9262), (3113, 6736), (3368, 6226), (4528, 4631)]