689643

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:171

約数の個数: 24

約数和(自身を含む): 1086800

約数和(自身を除く): 397157

約数列:

[1, 3, 9, 19, 37, 57, 109, 111, 171, 327, 333, 703, 981, 2071, 2109, 4033, 6213, 6327, 12099, 18639, 36297, 76627, 229881, 689643]

約数ペア:

[(1, 689643), (3, 229881), (9, 76627), (19, 36297), (37, 18639), (57, 12099), (109, 6327), (111, 6213), (171, 4033), (327, 2109), (333, 2071), (703, 981)]