291215979

素因数分解:

$3^4\times {\mathrm{617}}^1\times {\mathrm{5827}}^1$

素因数の和:6456

約数の個数: 20

約数和(自身を含む): 435806184

約数和(自身を除く): 144590205

約数列:

[1, 3, 9, 27, 81, 617, 1851, 5553, 5827, 16659, 17481, 49977, 52443, 157329, 471987, 3595259, 10785777, 32357331, 97071993, 291215979]

約数ペア:

[(1, 291215979), (3, 97071993), (9, 32357331), (27, 10785777), (81, 3595259), (617, 471987), (1851, 157329), (5553, 52443), (5827, 49977), (16659, 17481)]