19878040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:201

約数の個数: 128

約数和(自身を含む): 56770560

約数和(自身を除く): 36892520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 127, 130, 140, 172, 182, 215, 254, 260, 280, 301, 344, 364, 430, 455, 508, 520, 559, 602, 635, 728, 860, 889, 910, 1016, 1118, 1204, 1270, 1505, 1651, 1720, 1778, 1820, 2236, 2408, 2540, 2795, 3010, 3302, 3556, 3640, 3913, 4445, 4472, 5080, 5461, 5590, 6020, 6604, 7112, 7826, 8255, 8890, 10922, 11180, 11557, 12040, 13208, 15652, 16510, 17780, 19565, 21844, 22360, 23114, 27305, 31304, 33020, 35560, 38227, 39130, 43688, 46228, 54610, 57785, 66040, 70993, 76454, 78260, 92456, 109220, 115570, 141986, 152908, 156520, 191135, 218440, 231140, 283972, 305816, 354965, 382270, 462280, 496951, 567944, 709930, 764540, 993902, 1419860, 1529080, 1987804, 2484755, 2839720, 3975608, 4969510, 9939020, 19878040]

約数ペア:

[(1, 19878040), (2, 9939020), (4, 4969510), (5, 3975608), (7, 2839720), (8, 2484755), (10, 1987804), (13, 1529080), (14, 1419860), (20, 993902), (26, 764540), (28, 709930), (35, 567944), (40, 496951), (43, 462280), (52, 382270), (56, 354965), (65, 305816), (70, 283972), (86, 231140), (91, 218440), (104, 191135), (127, 156520), (130, 152908), (140, 141986), (172, 115570), (182, 109220), (215, 92456), (254, 78260), (260, 76454), (280, 70993), (301, 66040), (344, 57785), (364, 54610), (430, 46228), (455, 43688), (508, 39130), (520, 38227), (559, 35560), (602, 33020), (635, 31304), (728, 27305), (860, 23114), (889, 22360), (910, 21844), (1016, 19565), (1118, 17780), (1204, 16510), (1270, 15652), (1505, 13208), (1651, 12040), (1720, 11557), (1778, 11180), (1820, 10922), (2236, 8890), (2408, 8255), (2540, 7826), (2795, 7112), (3010, 6604), (3302, 6020), (3556, 5590), (3640, 5461), (3913, 5080), (4445, 4472)]