20101480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 56609280

約数和(自身を除く): 36507800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 41, 56, 68, 70, 82, 85, 103, 119, 136, 140, 164, 170, 205, 206, 238, 280, 287, 328, 340, 410, 412, 476, 515, 574, 595, 680, 697, 721, 820, 824, 952, 1030, 1148, 1190, 1394, 1435, 1442, 1640, 1751, 2060, 2296, 2380, 2788, 2870, 2884, 3485, 3502, 3605, 4120, 4223, 4760, 4879, 5576, 5740, 5768, 6970, 7004, 7210, 8446, 8755, 9758, 11480, 12257, 13940, 14008, 14420, 16892, 17510, 19516, 21115, 24395, 24514, 27880, 28840, 29561, 33784, 35020, 39032, 42230, 48790, 49028, 59122, 61285, 70040, 71791, 84460, 97580, 98056, 118244, 122570, 143582, 147805, 168920, 195160, 236488, 245140, 287164, 295610, 358955, 490280, 502537, 574328, 591220, 717910, 1005074, 1182440, 1435820, 2010148, 2512685, 2871640, 4020296, 5025370, 10050740, 20101480]

約数ペア:

[(1, 20101480), (2, 10050740), (4, 5025370), (5, 4020296), (7, 2871640), (8, 2512685), (10, 2010148), (14, 1435820), (17, 1182440), (20, 1005074), (28, 717910), (34, 591220), (35, 574328), (40, 502537), (41, 490280), (56, 358955), (68, 295610), (70, 287164), (82, 245140), (85, 236488), (103, 195160), (119, 168920), (136, 147805), (140, 143582), (164, 122570), (170, 118244), (205, 98056), (206, 97580), (238, 84460), (280, 71791), (287, 70040), (328, 61285), (340, 59122), (410, 49028), (412, 48790), (476, 42230), (515, 39032), (574, 35020), (595, 33784), (680, 29561), (697, 28840), (721, 27880), (820, 24514), (824, 24395), (952, 21115), (1030, 19516), (1148, 17510), (1190, 16892), (1394, 14420), (1435, 14008), (1442, 13940), (1640, 12257), (1751, 11480), (2060, 9758), (2296, 8755), (2380, 8446), (2788, 7210), (2870, 7004), (2884, 6970), (3485, 5768), (3502, 5740), (3605, 5576), (4120, 4879), (4223, 4760)]