20801438

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1231}}^1$

素因数の和:1328

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17518690

約数列:

[1, 2, 7, 14, 17, 34, 71, 119, 142, 238, 497, 994, 1207, 1231, 2414, 2462, 8449, 8617, 16898, 17234, 20927, 41854, 87401, 146489, 174802, 292978, 611807, 1223614, 1485817, 2971634, 10400719, 20801438]

約数ペア:

[(1, 20801438), (2, 10400719), (7, 2971634), (14, 1485817), (17, 1223614), (34, 611807), (71, 292978), (119, 174802), (142, 146489), (238, 87401), (497, 41854), (994, 20927), (1207, 17234), (1231, 16898), (2414, 8617), (2462, 8449)]