78641920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 220163328

約数和(自身を除く): 141521408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 67, 70, 80, 112, 128, 131, 134, 140, 160, 224, 256, 262, 268, 280, 320, 335, 448, 469, 524, 536, 560, 640, 655, 670, 896, 917, 938, 1048, 1072, 1120, 1280, 1310, 1340, 1792, 1834, 1876, 2096, 2144, 2240, 2345, 2620, 2680, 3668, 3752, 4192, 4288, 4480, 4585, 4690, 5240, 5360, 7336, 7504, 8384, 8576, 8777, 8960, 9170, 9380, 10480, 10720, 14672, 15008, 16768, 17152, 17554, 18340, 18760, 20960, 21440, 29344, 30016, 33536, 35108, 36680, 37520, 41920, 42880, 43885, 58688, 60032, 61439, 70216, 73360, 75040, 83840, 85760, 87770, 117376, 120064, 122878, 140432, 146720, 150080, 167680, 175540, 234752, 245756, 280864, 293440, 300160, 307195, 351080, 491512, 561728, 586880, 600320, 614390, 702160, 983024, 1123456, 1173760, 1228780, 1404320, 1966048, 2246912, 2457560, 2808640, 3932096, 4915120, 5617280, 7864192, 9830240, 11234560, 15728384, 19660480, 39320960, 78641920]

約数ペア:

[(1, 78641920), (2, 39320960), (4, 19660480), (5, 15728384), (7, 11234560), (8, 9830240), (10, 7864192), (14, 5617280), (16, 4915120), (20, 3932096), (28, 2808640), (32, 2457560), (35, 2246912), (40, 1966048), (56, 1404320), (64, 1228780), (67, 1173760), (70, 1123456), (80, 983024), (112, 702160), (128, 614390), (131, 600320), (134, 586880), (140, 561728), (160, 491512), (224, 351080), (256, 307195), (262, 300160), (268, 293440), (280, 280864), (320, 245756), (335, 234752), (448, 175540), (469, 167680), (524, 150080), (536, 146720), (560, 140432), (640, 122878), (655, 120064), (670, 117376), (896, 87770), (917, 85760), (938, 83840), (1048, 75040), (1072, 73360), (1120, 70216), (1280, 61439), (1310, 60032), (1340, 58688), (1792, 43885), (1834, 42880), (1876, 41920), (2096, 37520), (2144, 36680), (2240, 35108), (2345, 33536), (2620, 30016), (2680, 29344), (3668, 21440), (3752, 20960), (4192, 18760), (4288, 18340), (4480, 17554), (4585, 17152), (4690, 16768), (5240, 15008), (5360, 14672), (7336, 10720), (7504, 10480), (8384, 9380), (8576, 9170), (8777, 8960)]