19495840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1$

素因数の和:151

約数の個数: 144

約数和(自身を含む): 57552768

約数和(自身を除く): 38056928

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 103, 104, 112, 130, 140, 160, 169, 182, 206, 208, 224, 260, 280, 338, 364, 412, 416, 455, 515, 520, 560, 676, 721, 728, 824, 845, 910, 1030, 1040, 1120, 1183, 1339, 1352, 1442, 1456, 1648, 1690, 1820, 2060, 2080, 2366, 2678, 2704, 2884, 2912, 3296, 3380, 3605, 3640, 4120, 4732, 5356, 5408, 5768, 5915, 6695, 6760, 7210, 7280, 8240, 9373, 9464, 10712, 11536, 11830, 13390, 13520, 14420, 14560, 16480, 17407, 18746, 18928, 21424, 23072, 23660, 26780, 27040, 28840, 34814, 37492, 37856, 42848, 46865, 47320, 53560, 57680, 69628, 74984, 87035, 93730, 94640, 107120, 115360, 121849, 139256, 149968, 174070, 187460, 189280, 214240, 243698, 278512, 299936, 348140, 374920, 487396, 557024, 609245, 696280, 749840, 974792, 1218490, 1392560, 1499680, 1949584, 2436980, 2785120, 3899168, 4873960, 9747920, 19495840]

約数ペア:

[(1, 19495840), (2, 9747920), (4, 4873960), (5, 3899168), (7, 2785120), (8, 2436980), (10, 1949584), (13, 1499680), (14, 1392560), (16, 1218490), (20, 974792), (26, 749840), (28, 696280), (32, 609245), (35, 557024), (40, 487396), (52, 374920), (56, 348140), (65, 299936), (70, 278512), (80, 243698), (91, 214240), (103, 189280), (104, 187460), (112, 174070), (130, 149968), (140, 139256), (160, 121849), (169, 115360), (182, 107120), (206, 94640), (208, 93730), (224, 87035), (260, 74984), (280, 69628), (338, 57680), (364, 53560), (412, 47320), (416, 46865), (455, 42848), (515, 37856), (520, 37492), (560, 34814), (676, 28840), (721, 27040), (728, 26780), (824, 23660), (845, 23072), (910, 21424), (1030, 18928), (1040, 18746), (1120, 17407), (1183, 16480), (1339, 14560), (1352, 14420), (1442, 13520), (1456, 13390), (1648, 11830), (1690, 11536), (1820, 10712), (2060, 9464), (2080, 9373), (2366, 8240), (2678, 7280), (2704, 7210), (2884, 6760), (2912, 6695), (3296, 5915), (3380, 5768), (3605, 5408), (3640, 5356), (4120, 4732)]