20903973904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1453}}^1\times {\mathrm{1901}}^1$

素因数の和:3416

約数の個数: 80

約数和(自身を含む): 45265834944

約数和(自身を除く): 24361861040

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1453, 1892, 1901, 2906, 3784, 3802, 5812, 7568, 7604, 11624, 15208, 15983, 20911, 23248, 30416, 31966, 41822, 62479, 63932, 81743, 83644, 124958, 127864, 163486, 167288, 249916, 255728, 326972, 334576, 499832, 653944, 687269, 899173, 999664, 1307888, 1374538, 1798346, 2749076, 2762153, 3596692, 5498152, 5524306, 7193384, 10996304, 11048612, 14386768, 22097224, 30383683, 44194448, 60767366, 118772579, 121534732, 237545158, 243069464, 475090316, 486138928, 950180632, 1306498369, 1900361264, 2612996738, 5225993476, 10451986952, 20903973904]

約数ペア:

[(1, 20903973904), (2, 10451986952), (4, 5225993476), (8, 2612996738), (11, 1900361264), (16, 1306498369), (22, 950180632), (43, 486138928), (44, 475090316), (86, 243069464), (88, 237545158), (172, 121534732), (176, 118772579), (344, 60767366), (473, 44194448), (688, 30383683), (946, 22097224), (1453, 14386768), (1892, 11048612), (1901, 10996304), (2906, 7193384), (3784, 5524306), (3802, 5498152), (5812, 3596692), (7568, 2762153), (7604, 2749076), (11624, 1798346), (15208, 1374538), (15983, 1307888), (20911, 999664), (23248, 899173), (30416, 687269), (31966, 653944), (41822, 499832), (62479, 334576), (63932, 326972), (81743, 255728), (83644, 249916), (124958, 167288), (127864, 163486)]