643485160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:371

約数の個数: 128

約数和(自身を含む): 1583971200

約数和(自身を除く): 940486040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 107, 152, 164, 190, 193, 205, 214, 328, 380, 386, 410, 428, 535, 760, 772, 779, 820, 856, 965, 1070, 1544, 1558, 1640, 1930, 2033, 2140, 3116, 3667, 3860, 3895, 4066, 4280, 4387, 6232, 7334, 7720, 7790, 7913, 8132, 8774, 10165, 14668, 15580, 15826, 16264, 17548, 18335, 20330, 20651, 21935, 29336, 31160, 31652, 35096, 36670, 39565, 40660, 41302, 43870, 63304, 73340, 79130, 81320, 82604, 83353, 87740, 103255, 146680, 150347, 158260, 165208, 166706, 175480, 206510, 300694, 316520, 333412, 392369, 413020, 416765, 601388, 666824, 751735, 784738, 826040, 833530, 846691, 1202776, 1503470, 1569476, 1667060, 1693382, 1961845, 3006940, 3138952, 3334120, 3386764, 3923690, 4233455, 6013880, 6773528, 7847380, 8466910, 15694760, 16087129, 16933820, 32174258, 33867640, 64348516, 80435645, 128697032, 160871290, 321742580, 643485160]

約数ペア:

[(1, 643485160), (2, 321742580), (4, 160871290), (5, 128697032), (8, 80435645), (10, 64348516), (19, 33867640), (20, 32174258), (38, 16933820), (40, 16087129), (41, 15694760), (76, 8466910), (82, 7847380), (95, 6773528), (107, 6013880), (152, 4233455), (164, 3923690), (190, 3386764), (193, 3334120), (205, 3138952), (214, 3006940), (328, 1961845), (380, 1693382), (386, 1667060), (410, 1569476), (428, 1503470), (535, 1202776), (760, 846691), (772, 833530), (779, 826040), (820, 784738), (856, 751735), (965, 666824), (1070, 601388), (1544, 416765), (1558, 413020), (1640, 392369), (1930, 333412), (2033, 316520), (2140, 300694), (3116, 206510), (3667, 175480), (3860, 166706), (3895, 165208), (4066, 158260), (4280, 150347), (4387, 146680), (6232, 103255), (7334, 87740), (7720, 83353), (7790, 82604), (7913, 81320), (8132, 79130), (8774, 73340), (10165, 63304), (14668, 43870), (15580, 41302), (15826, 40660), (16264, 39565), (17548, 36670), (18335, 35096), (20330, 31652), (20651, 31160), (21935, 29336)]