21513800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{127}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 63329280

約数和(自身を除く): 41815480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 70, 77, 88, 100, 110, 121, 127, 140, 154, 175, 200, 220, 242, 254, 275, 280, 308, 350, 385, 440, 484, 508, 550, 605, 616, 635, 700, 770, 847, 889, 968, 1016, 1100, 1210, 1270, 1397, 1400, 1540, 1694, 1778, 1925, 2200, 2420, 2540, 2794, 3025, 3080, 3175, 3388, 3556, 3850, 4235, 4445, 4840, 5080, 5588, 6050, 6350, 6776, 6985, 7112, 7700, 8470, 8890, 9779, 11176, 12100, 12700, 13970, 15367, 15400, 16940, 17780, 19558, 21175, 22225, 24200, 25400, 27940, 30734, 33880, 34925, 35560, 39116, 42350, 44450, 48895, 55880, 61468, 69850, 76835, 78232, 84700, 88900, 97790, 107569, 122936, 139700, 153670, 169400, 177800, 195580, 215138, 244475, 279400, 307340, 384175, 391160, 430276, 488950, 537845, 614680, 768350, 860552, 977900, 1075690, 1536700, 1955800, 2151380, 2689225, 3073400, 4302760, 5378450, 10756900, 21513800]

約数ペア:

[(1, 21513800), (2, 10756900), (4, 5378450), (5, 4302760), (7, 3073400), (8, 2689225), (10, 2151380), (11, 1955800), (14, 1536700), (20, 1075690), (22, 977900), (25, 860552), (28, 768350), (35, 614680), (40, 537845), (44, 488950), (50, 430276), (55, 391160), (56, 384175), (70, 307340), (77, 279400), (88, 244475), (100, 215138), (110, 195580), (121, 177800), (127, 169400), (140, 153670), (154, 139700), (175, 122936), (200, 107569), (220, 97790), (242, 88900), (254, 84700), (275, 78232), (280, 76835), (308, 69850), (350, 61468), (385, 55880), (440, 48895), (484, 44450), (508, 42350), (550, 39116), (605, 35560), (616, 34925), (635, 33880), (700, 30734), (770, 27940), (847, 25400), (889, 24200), (968, 22225), (1016, 21175), (1100, 19558), (1210, 17780), (1270, 16940), (1397, 15400), (1400, 15367), (1540, 13970), (1694, 12700), (1778, 12100), (1925, 11176), (2200, 9779), (2420, 8890), (2540, 8470), (2794, 7700), (3025, 7112), (3080, 6985), (3175, 6776), (3388, 6350), (3556, 6050), (3850, 5588), (4235, 5080), (4445, 4840)]