20294800

素因数分解:

$2^4\times 5^2\times {\mathrm{113}}^1\times {\mathrm{449}}^1$

素因数の和:580

約数の個数: 60

約数和(自身を含む): 49299300

約数和(自身を除く): 29004500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 113, 200, 226, 400, 449, 452, 565, 898, 904, 1130, 1796, 1808, 2245, 2260, 2825, 3592, 4490, 4520, 5650, 7184, 8980, 9040, 11225, 11300, 17960, 22450, 22600, 35920, 44900, 45200, 50737, 89800, 101474, 179600, 202948, 253685, 405896, 507370, 811792, 1014740, 1268425, 2029480, 2536850, 4058960, 5073700, 10147400, 20294800]

約数ペア:

[(1, 20294800), (2, 10147400), (4, 5073700), (5, 4058960), (8, 2536850), (10, 2029480), (16, 1268425), (20, 1014740), (25, 811792), (40, 507370), (50, 405896), (80, 253685), (100, 202948), (113, 179600), (200, 101474), (226, 89800), (400, 50737), (449, 45200), (452, 44900), (565, 35920), (898, 22600), (904, 22450), (1130, 17960), (1796, 11300), (1808, 11225), (2245, 9040), (2260, 8980), (2825, 7184), (3592, 5650), (4490, 4520)]