81917815

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 124203456

約数和(自身を除く): 42285641

約数列:

[1, 5, 7, 17, 35, 37, 61, 85, 119, 185, 259, 305, 427, 595, 629, 1037, 1295, 2135, 2257, 3145, 3721, 4403, 5185, 7259, 11285, 15799, 18605, 22015, 26047, 36295, 38369, 63257, 78995, 130235, 137677, 191845, 268583, 316285, 442799, 688385, 963739, 1342915, 2213995, 2340509, 4818695, 11702545, 16383563, 81917815]

約数ペア:

[(1, 81917815), (5, 16383563), (7, 11702545), (17, 4818695), (35, 2340509), (37, 2213995), (61, 1342915), (85, 963739), (119, 688385), (185, 442799), (259, 316285), (305, 268583), (427, 191845), (595, 137677), (629, 130235), (1037, 78995), (1295, 63257), (2135, 38369), (2257, 36295), (3145, 26047), (3721, 22015), (4403, 18605), (5185, 15799), (7259, 11285)]