21203582080

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{5171}}^1$

素因数の和:5382

約数の個数: 128

約数和(自身を含む): 52226856000

約数和(自身を除く): 31023273920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 149, 160, 172, 215, 298, 320, 344, 430, 596, 640, 688, 745, 860, 1192, 1376, 1490, 1720, 2384, 2752, 2980, 3440, 4768, 5171, 5504, 5960, 6407, 6880, 9536, 10342, 11920, 12814, 13760, 19072, 20684, 23840, 25628, 25855, 27520, 32035, 41368, 47680, 51256, 51710, 64070, 82736, 95360, 102512, 103420, 128140, 165472, 205024, 206840, 222353, 256280, 330944, 410048, 413680, 444706, 512560, 661888, 770479, 820096, 827360, 889412, 1025120, 1111765, 1540958, 1654720, 1778824, 2050240, 2223530, 3081916, 3309440, 3557648, 3852395, 4100480, 4447060, 6163832, 7115296, 7704790, 8894120, 12327664, 14230592, 15409580, 17788240, 24655328, 28461184, 30819160, 33130597, 35576480, 49310656, 61638320, 66261194, 71152960, 98621312, 123276640, 132522388, 142305920, 165652985, 246553280, 265044776, 331305970, 493106560, 530089552, 662611940, 1060179104, 1325223880, 2120358208, 2650447760, 4240716416, 5300895520, 10601791040, 21203582080]

約数ペア:

[(1, 21203582080), (2, 10601791040), (4, 5300895520), (5, 4240716416), (8, 2650447760), (10, 2120358208), (16, 1325223880), (20, 1060179104), (32, 662611940), (40, 530089552), (43, 493106560), (64, 331305970), (80, 265044776), (86, 246553280), (128, 165652985), (149, 142305920), (160, 132522388), (172, 123276640), (215, 98621312), (298, 71152960), (320, 66261194), (344, 61638320), (430, 49310656), (596, 35576480), (640, 33130597), (688, 30819160), (745, 28461184), (860, 24655328), (1192, 17788240), (1376, 15409580), (1490, 14230592), (1720, 12327664), (2384, 8894120), (2752, 7704790), (2980, 7115296), (3440, 6163832), (4768, 4447060), (5171, 4100480), (5504, 3852395), (5960, 3557648), (6407, 3309440), (6880, 3081916), (9536, 2223530), (10342, 2050240), (11920, 1778824), (12814, 1654720), (13760, 1540958), (19072, 1111765), (20684, 1025120), (23840, 889412), (25628, 827360), (25855, 820096), (27520, 770479), (32035, 661888), (41368, 512560), (47680, 444706), (51256, 413680), (51710, 410048), (64070, 330944), (82736, 256280), (95360, 222353), (102512, 206840), (103420, 205024), (128140, 165472)]