20983312

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4357}}^1$

素因数の和:4415

約数の個数: 40

約数和(自身を含む): 47554496

約数和(自身を除く): 26571184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 56, 86, 112, 172, 301, 344, 602, 688, 1204, 2408, 4357, 4816, 8714, 17428, 30499, 34856, 60998, 69712, 121996, 187351, 243992, 374702, 487984, 749404, 1311457, 1498808, 2622914, 2997616, 5245828, 10491656, 20983312]

約数ペア:

[(1, 20983312), (2, 10491656), (4, 5245828), (7, 2997616), (8, 2622914), (14, 1498808), (16, 1311457), (28, 749404), (43, 487984), (56, 374702), (86, 243992), (112, 187351), (172, 121996), (301, 69712), (344, 60998), (602, 34856), (688, 30499), (1204, 17428), (2408, 8714), (4357, 4816)]