686171882

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 1170809640

約数和(自身を除く): 484637758

約数列:

[1, 2, 11, 22, 37, 74, 121, 197, 242, 389, 394, 407, 778, 814, 2167, 4279, 4334, 4477, 7289, 8558, 8954, 14393, 14578, 23837, 28786, 47069, 47674, 76633, 80179, 94138, 153266, 158323, 160358, 316646, 842963, 881969, 1685926, 1741553, 1763938, 2835421, 3483106, 5670842, 9272593, 18545186, 31189631, 62379262, 343085941, 686171882]

約数ペア:

[(1, 686171882), (2, 343085941), (11, 62379262), (22, 31189631), (37, 18545186), (74, 9272593), (121, 5670842), (197, 3483106), (242, 2835421), (389, 1763938), (394, 1741553), (407, 1685926), (778, 881969), (814, 842963), (2167, 316646), (4279, 160358), (4334, 158323), (4477, 153266), (7289, 94138), (8558, 80179), (8954, 76633), (14393, 47674), (14578, 47069), (23837, 28786)]