661338

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 1513920

約数和(自身を除く): 852582

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 331, 333, 662, 666, 993, 999, 1986, 1998, 2979, 5958, 8937, 12247, 17874, 24494, 36741, 73482, 110223, 220446, 330669, 661338]

約数ペア:

[(1, 661338), (2, 330669), (3, 220446), (6, 110223), (9, 73482), (18, 36741), (27, 24494), (37, 17874), (54, 12247), (74, 8937), (111, 5958), (222, 2979), (331, 1998), (333, 1986), (662, 999), (666, 993)]