20137880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:153

約数の個数: 128

約数和(自身を含む): 55987200

約数和(自身を除く): 35849320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 53, 56, 59, 70, 92, 106, 115, 118, 140, 161, 184, 212, 230, 236, 265, 280, 295, 322, 371, 413, 424, 460, 472, 530, 590, 644, 742, 805, 826, 920, 1060, 1180, 1219, 1288, 1357, 1484, 1610, 1652, 1855, 2065, 2120, 2360, 2438, 2714, 2968, 3127, 3220, 3304, 3710, 4130, 4876, 5428, 6095, 6254, 6440, 6785, 7420, 8260, 8533, 9499, 9752, 10856, 12190, 12508, 13570, 14840, 15635, 16520, 17066, 18998, 21889, 24380, 25016, 27140, 31270, 34132, 37996, 42665, 43778, 47495, 48760, 54280, 62540, 68264, 71921, 75992, 85330, 87556, 94990, 109445, 125080, 143842, 170660, 175112, 189980, 218890, 287684, 341320, 359605, 379960, 437780, 503447, 575368, 719210, 875560, 1006894, 1438420, 2013788, 2517235, 2876840, 4027576, 5034470, 10068940, 20137880]

約数ペア:

[(1, 20137880), (2, 10068940), (4, 5034470), (5, 4027576), (7, 2876840), (8, 2517235), (10, 2013788), (14, 1438420), (20, 1006894), (23, 875560), (28, 719210), (35, 575368), (40, 503447), (46, 437780), (53, 379960), (56, 359605), (59, 341320), (70, 287684), (92, 218890), (106, 189980), (115, 175112), (118, 170660), (140, 143842), (161, 125080), (184, 109445), (212, 94990), (230, 87556), (236, 85330), (265, 75992), (280, 71921), (295, 68264), (322, 62540), (371, 54280), (413, 48760), (424, 47495), (460, 43778), (472, 42665), (530, 37996), (590, 34132), (644, 31270), (742, 27140), (805, 25016), (826, 24380), (920, 21889), (1060, 18998), (1180, 17066), (1219, 16520), (1288, 15635), (1357, 14840), (1484, 13570), (1610, 12508), (1652, 12190), (1855, 10856), (2065, 9752), (2120, 9499), (2360, 8533), (2438, 8260), (2714, 7420), (2968, 6785), (3127, 6440), (3220, 6254), (3304, 6095), (3710, 5428), (4130, 4876)]