21443984

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:483

約数の個数: 40

約数和(自身を含む): 43127448

約数和(自身を除く): 21683464

約数列:

[1, 2, 4, 8, 16, 41, 82, 97, 164, 194, 328, 337, 388, 656, 674, 776, 1348, 1552, 2696, 3977, 5392, 7954, 13817, 15908, 27634, 31816, 32689, 55268, 63632, 65378, 110536, 130756, 221072, 261512, 523024, 1340249, 2680498, 5360996, 10721992, 21443984]

約数ペア:

[(1, 21443984), (2, 10721992), (4, 5360996), (8, 2680498), (16, 1340249), (41, 523024), (82, 261512), (97, 221072), (164, 130756), (194, 110536), (328, 65378), (337, 63632), (388, 55268), (656, 32689), (674, 31816), (776, 27634), (1348, 15908), (1552, 13817), (2696, 7954), (3977, 5392)]