399417920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{487}}^1$

素因数の和:748

約数の個数: 112

約数和(自身を含む): 1044171648

約数和(自身を除く): 644753728

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 160, 176, 220, 233, 320, 352, 440, 466, 487, 704, 880, 932, 974, 1165, 1760, 1864, 1948, 2330, 2435, 2563, 3520, 3728, 3896, 4660, 4870, 5126, 5357, 7456, 7792, 9320, 9740, 10252, 10714, 12815, 14912, 15584, 18640, 19480, 20504, 21428, 25630, 26785, 31168, 37280, 38960, 41008, 42856, 51260, 53570, 74560, 77920, 82016, 85712, 102520, 107140, 113471, 155840, 164032, 171424, 205040, 214280, 226942, 342848, 410080, 428560, 453884, 567355, 820160, 857120, 907768, 1134710, 1248181, 1714240, 1815536, 2269420, 2496362, 3631072, 4538840, 4992724, 6240905, 7262144, 9077680, 9985448, 12481810, 18155360, 19970896, 24963620, 36310720, 39941792, 49927240, 79883584, 99854480, 199708960, 399417920]

約数ペア:

[(1, 399417920), (2, 199708960), (4, 99854480), (5, 79883584), (8, 49927240), (10, 39941792), (11, 36310720), (16, 24963620), (20, 19970896), (22, 18155360), (32, 12481810), (40, 9985448), (44, 9077680), (55, 7262144), (64, 6240905), (80, 4992724), (88, 4538840), (110, 3631072), (160, 2496362), (176, 2269420), (220, 1815536), (233, 1714240), (320, 1248181), (352, 1134710), (440, 907768), (466, 857120), (487, 820160), (704, 567355), (880, 453884), (932, 428560), (974, 410080), (1165, 342848), (1760, 226942), (1864, 214280), (1948, 205040), (2330, 171424), (2435, 164032), (2563, 155840), (3520, 113471), (3728, 107140), (3896, 102520), (4660, 85712), (4870, 82016), (5126, 77920), (5357, 74560), (7456, 53570), (7792, 51260), (9320, 42856), (9740, 41008), (10252, 38960), (10714, 37280), (12815, 31168), (14912, 26785), (15584, 25630), (18640, 21428), (19480, 20504)]