208718811

素因数分解:

$3^2\times 7^1\times {\mathrm{1481}}^1\times {\mathrm{2237}}^1$

素因数の和:3731

約数の個数: 24

約数和(自身を含む): 344938464

約数和(自身を除く): 136219653

約数列:

[1, 3, 7, 9, 21, 63, 1481, 2237, 4443, 6711, 10367, 13329, 15659, 20133, 31101, 46977, 93303, 140931, 3312997, 9938991, 23190979, 29816973, 69572937, 208718811]

約数ペア:

[(1, 208718811), (3, 69572937), (7, 29816973), (9, 23190979), (21, 9938991), (63, 3312997), (1481, 140931), (2237, 93303), (4443, 46977), (6711, 31101), (10367, 20133), (13329, 15659)]