19700240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:424

約数の個数: 80

約数和(自身を含む): 52948992

約数和(自身を除く): 33248752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 277, 280, 508, 554, 560, 635, 889, 1016, 1108, 1270, 1385, 1778, 1939, 2032, 2216, 2540, 2770, 3556, 3878, 4432, 4445, 5080, 5540, 7112, 7756, 8890, 9695, 10160, 11080, 14224, 15512, 17780, 19390, 22160, 31024, 35179, 35560, 38780, 70358, 71120, 77560, 140716, 155120, 175895, 246253, 281432, 351790, 492506, 562864, 703580, 985012, 1231265, 1407160, 1970024, 2462530, 2814320, 3940048, 4925060, 9850120, 19700240]

約数ペア:

[(1, 19700240), (2, 9850120), (4, 4925060), (5, 3940048), (7, 2814320), (8, 2462530), (10, 1970024), (14, 1407160), (16, 1231265), (20, 985012), (28, 703580), (35, 562864), (40, 492506), (56, 351790), (70, 281432), (80, 246253), (112, 175895), (127, 155120), (140, 140716), (254, 77560), (277, 71120), (280, 70358), (508, 38780), (554, 35560), (560, 35179), (635, 31024), (889, 22160), (1016, 19390), (1108, 17780), (1270, 15512), (1385, 14224), (1778, 11080), (1939, 10160), (2032, 9695), (2216, 8890), (2540, 7756), (2770, 7112), (3556, 5540), (3878, 5080), (4432, 4445)]