218865920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1879}}^1$

素因数の和:1920

約数の個数: 144

約数和(自身を含む): 645576960

約数和(自身を除く): 426711040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 256, 260, 280, 320, 364, 416, 448, 455, 520, 560, 640, 728, 832, 896, 910, 1040, 1120, 1280, 1456, 1664, 1792, 1820, 1879, 2080, 2240, 2912, 3328, 3640, 3758, 4160, 4480, 5824, 7280, 7516, 8320, 8960, 9395, 11648, 13153, 14560, 15032, 16640, 18790, 23296, 24427, 26306, 29120, 30064, 37580, 48854, 52612, 58240, 60128, 65765, 75160, 97708, 105224, 116480, 120256, 122135, 131530, 150320, 170989, 195416, 210448, 240512, 244270, 263060, 300640, 341978, 390832, 420896, 481024, 488540, 526120, 601280, 683956, 781664, 841792, 854945, 977080, 1052240, 1202560, 1367912, 1563328, 1683584, 1709890, 1954160, 2104480, 2405120, 2735824, 3126656, 3367168, 3419780, 3908320, 4208960, 5471648, 6253312, 6839560, 7816640, 8417920, 10943296, 13679120, 15633280, 16835840, 21886592, 27358240, 31266560, 43773184, 54716480, 109432960, 218865920]

約数ペア:

[(1, 218865920), (2, 109432960), (4, 54716480), (5, 43773184), (7, 31266560), (8, 27358240), (10, 21886592), (13, 16835840), (14, 15633280), (16, 13679120), (20, 10943296), (26, 8417920), (28, 7816640), (32, 6839560), (35, 6253312), (40, 5471648), (52, 4208960), (56, 3908320), (64, 3419780), (65, 3367168), (70, 3126656), (80, 2735824), (91, 2405120), (104, 2104480), (112, 1954160), (128, 1709890), (130, 1683584), (140, 1563328), (160, 1367912), (182, 1202560), (208, 1052240), (224, 977080), (256, 854945), (260, 841792), (280, 781664), (320, 683956), (364, 601280), (416, 526120), (448, 488540), (455, 481024), (520, 420896), (560, 390832), (640, 341978), (728, 300640), (832, 263060), (896, 244270), (910, 240512), (1040, 210448), (1120, 195416), (1280, 170989), (1456, 150320), (1664, 131530), (1792, 122135), (1820, 120256), (1879, 116480), (2080, 105224), (2240, 97708), (2912, 75160), (3328, 65765), (3640, 60128), (3758, 58240), (4160, 52612), (4480, 48854), (5824, 37580), (7280, 30064), (7516, 29120), (8320, 26306), (8960, 24427), (9395, 23296), (11648, 18790), (13153, 16640), (14560, 15032)]