18901922

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{461}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 32598720

約数和(自身を除く): 13696798

約数列:

[1, 2, 13, 19, 26, 38, 83, 166, 247, 461, 494, 922, 1079, 1577, 2158, 3154, 5993, 8759, 11986, 17518, 20501, 38263, 41002, 76526, 113867, 227734, 497419, 726997, 994838, 1453994, 9450961, 18901922]

約数ペア:

[(1, 18901922), (2, 9450961), (13, 1453994), (19, 994838), (26, 726997), (38, 497419), (83, 227734), (166, 113867), (247, 76526), (461, 41002), (494, 38263), (922, 20501), (1079, 17518), (1577, 11986), (2158, 8759), (3154, 5993)]