81681266

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 133660800

約数和(自身を除く): 51979534

約数列:

[1, 2, 19, 38, 41, 82, 103, 206, 509, 779, 1018, 1558, 1957, 3914, 4223, 8446, 9671, 19342, 20869, 41738, 52427, 80237, 104854, 160474, 396511, 793022, 996113, 1992226, 2149507, 4299014, 40840633, 81681266]

約数ペア:

[(1, 81681266), (2, 40840633), (19, 4299014), (38, 2149507), (41, 1992226), (82, 996113), (103, 793022), (206, 396511), (509, 160474), (779, 104854), (1018, 80237), (1558, 52427), (1957, 41738), (3914, 20869), (4223, 19342), (8446, 9671)]