20577400

素因数分解:

$2^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{751}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 48255840

約数和(自身を除く): 27678440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 137, 200, 274, 548, 685, 751, 1096, 1370, 1502, 2740, 3004, 3425, 3755, 5480, 6008, 6850, 7510, 13700, 15020, 18775, 27400, 30040, 37550, 75100, 102887, 150200, 205774, 411548, 514435, 823096, 1028870, 2057740, 2572175, 4115480, 5144350, 10288700, 20577400]

約数ペア:

[(1, 20577400), (2, 10288700), (4, 5144350), (5, 4115480), (8, 2572175), (10, 2057740), (20, 1028870), (25, 823096), (40, 514435), (50, 411548), (100, 205774), (137, 150200), (200, 102887), (274, 75100), (548, 37550), (685, 30040), (751, 27400), (1096, 18775), (1370, 15020), (1502, 13700), (2740, 7510), (3004, 6850), (3425, 6008), (3755, 5480)]