399989877

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{461}}^1\times {\mathrm{523}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 619745280

約数和(自身を除く): 219755403

約数列:

[1, 3, 7, 21, 79, 237, 461, 523, 553, 1383, 1569, 1659, 3227, 3661, 9681, 10983, 36419, 41317, 109257, 123951, 241103, 254933, 289219, 723309, 764799, 867657, 1687721, 5063163, 19047137, 57141411, 133329959, 399989877]

約数ペア:

[(1, 399989877), (3, 133329959), (7, 57141411), (21, 19047137), (79, 5063163), (237, 1687721), (461, 867657), (523, 764799), (553, 723309), (1383, 289219), (1569, 254933), (1659, 241103), (3227, 123951), (3661, 109257), (9681, 41317), (10983, 36419)]