18917920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:175

約数の個数: 144

約数和(自身を含む): 55157760

約数和(自身を除く): 36239840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 127, 133, 140, 152, 160, 190, 196, 224, 245, 254, 266, 280, 304, 380, 392, 490, 508, 532, 560, 608, 635, 665, 760, 784, 889, 931, 980, 1016, 1064, 1120, 1270, 1330, 1520, 1568, 1778, 1862, 1960, 2032, 2128, 2413, 2540, 2660, 3040, 3556, 3724, 3920, 4064, 4256, 4445, 4655, 4826, 5080, 5320, 6223, 7112, 7448, 7840, 8890, 9310, 9652, 10160, 10640, 12065, 12446, 14224, 14896, 16891, 17780, 18620, 19304, 20320, 21280, 24130, 24892, 28448, 29792, 31115, 33782, 35560, 37240, 38608, 48260, 49784, 62230, 67564, 71120, 74480, 77216, 84455, 96520, 99568, 118237, 124460, 135128, 142240, 148960, 168910, 193040, 199136, 236474, 248920, 270256, 337820, 386080, 472948, 497840, 540512, 591185, 675640, 945896, 995680, 1182370, 1351280, 1891792, 2364740, 2702560, 3783584, 4729480, 9458960, 18917920]

約数ペア:

[(1, 18917920), (2, 9458960), (4, 4729480), (5, 3783584), (7, 2702560), (8, 2364740), (10, 1891792), (14, 1351280), (16, 1182370), (19, 995680), (20, 945896), (28, 675640), (32, 591185), (35, 540512), (38, 497840), (40, 472948), (49, 386080), (56, 337820), (70, 270256), (76, 248920), (80, 236474), (95, 199136), (98, 193040), (112, 168910), (127, 148960), (133, 142240), (140, 135128), (152, 124460), (160, 118237), (190, 99568), (196, 96520), (224, 84455), (245, 77216), (254, 74480), (266, 71120), (280, 67564), (304, 62230), (380, 49784), (392, 48260), (490, 38608), (508, 37240), (532, 35560), (560, 33782), (608, 31115), (635, 29792), (665, 28448), (760, 24892), (784, 24130), (889, 21280), (931, 20320), (980, 19304), (1016, 18620), (1064, 17780), (1120, 16891), (1270, 14896), (1330, 14224), (1520, 12446), (1568, 12065), (1778, 10640), (1862, 10160), (1960, 9652), (2032, 9310), (2128, 8890), (2413, 7840), (2540, 7448), (2660, 7112), (3040, 6223), (3556, 5320), (3724, 5080), (3920, 4826), (4064, 4655), (4256, 4445)]