20571883191

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{557}}^1\times {\mathrm{563}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 30782610144

約数和(自身を除く): 10210726953

約数列:

[1, 3, 9, 37, 111, 197, 333, 557, 563, 591, 1671, 1689, 1773, 5013, 5067, 7289, 20609, 20831, 21867, 61827, 62493, 65601, 109729, 110911, 185481, 187479, 313591, 329187, 332733, 940773, 987561, 998199, 2822319, 4059973, 4103707, 11602867, 12179919, 12311121, 34808601, 36539757, 36933363, 61777427, 104425803, 185332281, 555996843, 2285764799, 6857294397, 20571883191]

約数ペア:

[(1, 20571883191), (3, 6857294397), (9, 2285764799), (37, 555996843), (111, 185332281), (197, 104425803), (333, 61777427), (557, 36933363), (563, 36539757), (591, 34808601), (1671, 12311121), (1689, 12179919), (1773, 11602867), (5013, 4103707), (5067, 4059973), (7289, 2822319), (20609, 998199), (20831, 987561), (21867, 940773), (61827, 332733), (62493, 329187), (65601, 313591), (109729, 187479), (110911, 185481)]