21293338

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 37068480

約数和(自身を除く): 15775142

約数列:

[1, 2, 11, 19, 22, 38, 121, 209, 242, 418, 421, 842, 1331, 2299, 2662, 4598, 4631, 7999, 9262, 15998, 25289, 50578, 50941, 87989, 101882, 175978, 560351, 967879, 1120702, 1935758, 10646669, 21293338]

約数ペア:

[(1, 21293338), (2, 10646669), (11, 1935758), (19, 1120702), (22, 967879), (38, 560351), (121, 175978), (209, 101882), (242, 87989), (418, 50941), (421, 50578), (842, 25289), (1331, 15998), (2299, 9262), (2662, 7999), (4598, 4631)]