20972800

素因数分解:

$2^8\times 5^2\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:168

約数の個数: 108

約数和(自身を含む): 54176220

約数和(自身を除く): 33203420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 64, 80, 100, 113, 116, 128, 145, 160, 200, 226, 232, 256, 290, 320, 400, 452, 464, 565, 580, 640, 725, 800, 904, 928, 1130, 1160, 1280, 1450, 1600, 1808, 1856, 2260, 2320, 2825, 2900, 3200, 3277, 3616, 3712, 4520, 4640, 5650, 5800, 6400, 6554, 7232, 7424, 9040, 9280, 11300, 11600, 13108, 14464, 16385, 18080, 18560, 22600, 23200, 26216, 28928, 32770, 36160, 37120, 45200, 46400, 52432, 65540, 72320, 81925, 90400, 92800, 104864, 131080, 144640, 163850, 180800, 185600, 209728, 262160, 327700, 361600, 419456, 524320, 655400, 723200, 838912, 1048640, 1310800, 2097280, 2621600, 4194560, 5243200, 10486400, 20972800]

約数ペア:

[(1, 20972800), (2, 10486400), (4, 5243200), (5, 4194560), (8, 2621600), (10, 2097280), (16, 1310800), (20, 1048640), (25, 838912), (29, 723200), (32, 655400), (40, 524320), (50, 419456), (58, 361600), (64, 327700), (80, 262160), (100, 209728), (113, 185600), (116, 180800), (128, 163850), (145, 144640), (160, 131080), (200, 104864), (226, 92800), (232, 90400), (256, 81925), (290, 72320), (320, 65540), (400, 52432), (452, 46400), (464, 45200), (565, 37120), (580, 36160), (640, 32770), (725, 28928), (800, 26216), (904, 23200), (928, 22600), (1130, 18560), (1160, 18080), (1280, 16385), (1450, 14464), (1600, 13108), (1808, 11600), (1856, 11300), (2260, 9280), (2320, 9040), (2825, 7424), (2900, 7232), (3200, 6554), (3277, 6400), (3616, 5800), (3712, 5650), (4520, 4640)]