64947987

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1667}}^1$

素因数の和:1729

約数の個数: 40

約数和(自身を含む): 107372496

約数和(自身を除く): 42424509

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 481, 999, 1053, 1443, 1667, 2997, 4329, 5001, 12987, 15003, 21671, 38961, 45009, 61679, 65013, 135027, 185037, 195039, 555111, 585117, 801827, 1665333, 1755351, 2405481, 4995999, 7216443, 21649329, 64947987]

約数ペア:

[(1, 64947987), (3, 21649329), (9, 7216443), (13, 4995999), (27, 2405481), (37, 1755351), (39, 1665333), (81, 801827), (111, 585117), (117, 555111), (333, 195039), (351, 185037), (481, 135027), (999, 65013), (1053, 61679), (1443, 45009), (1667, 38961), (2997, 21671), (4329, 15003), (5001, 12987)]