19765108

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:544

約数の個数: 36

約数和(自身を含む): 38502436

約数和(自身を除く): 18737328

約数列:

[1, 2, 4, 11, 22, 44, 97, 121, 194, 242, 388, 421, 484, 842, 1067, 1684, 2134, 4268, 4631, 9262, 11737, 18524, 23474, 40837, 46948, 50941, 81674, 101882, 163348, 203764, 449207, 898414, 1796828, 4941277, 9882554, 19765108]

約数ペア:

[(1, 19765108), (2, 9882554), (4, 4941277), (11, 1796828), (22, 898414), (44, 449207), (97, 203764), (121, 163348), (194, 101882), (242, 81674), (388, 50941), (421, 46948), (484, 40837), (842, 23474), (1067, 18524), (1684, 11737), (2134, 9262), (4268, 4631)]