21278696

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1613}}^1$

素因数の和:1733

約数の個数: 32

約数和(自身を含む): 42706440

約数和(自身を除く): 21427744

約数列:

[1, 2, 4, 8, 17, 34, 68, 97, 136, 194, 388, 776, 1613, 1649, 3226, 3298, 6452, 6596, 12904, 13192, 27421, 54842, 109684, 156461, 219368, 312922, 625844, 1251688, 2659837, 5319674, 10639348, 21278696]

約数ペア:

[(1, 21278696), (2, 10639348), (4, 5319674), (8, 2659837), (17, 1251688), (34, 625844), (68, 312922), (97, 219368), (136, 156461), (194, 109684), (388, 54842), (776, 27421), (1613, 13192), (1649, 12904), (3226, 6596), (3298, 6452)]