18778916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 37867200

約数和(自身を除く): 19088284

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 83, 166, 229, 247, 332, 458, 494, 916, 988, 1079, 1577, 2158, 2977, 3154, 4316, 4351, 5954, 6308, 8702, 11908, 17404, 19007, 20501, 38014, 41002, 56563, 76028, 82004, 113126, 226252, 247091, 361133, 494182, 722266, 988364, 1444532, 4694729, 9389458, 18778916]

約数ペア:

[(1, 18778916), (2, 9389458), (4, 4694729), (13, 1444532), (19, 988364), (26, 722266), (38, 494182), (52, 361133), (76, 247091), (83, 226252), (166, 113126), (229, 82004), (247, 76028), (332, 56563), (458, 41002), (494, 38014), (916, 20501), (988, 19007), (1079, 17404), (1577, 11908), (2158, 8702), (2977, 6308), (3154, 5954), (4316, 4351)]