20874400

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{269}}^1$

素因数の和:386

約数の個数: 72

約数和(自身を含む): 51676380

約数和(自身を除く): 30801980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 160, 194, 200, 269, 388, 400, 485, 538, 776, 800, 970, 1076, 1345, 1552, 1940, 2152, 2425, 2690, 3104, 3880, 4304, 4850, 5380, 6725, 7760, 8608, 9700, 10760, 13450, 15520, 19400, 21520, 26093, 26900, 38800, 43040, 52186, 53800, 77600, 104372, 107600, 130465, 208744, 215200, 260930, 417488, 521860, 652325, 834976, 1043720, 1304650, 2087440, 2609300, 4174880, 5218600, 10437200, 20874400]

約数ペア:

[(1, 20874400), (2, 10437200), (4, 5218600), (5, 4174880), (8, 2609300), (10, 2087440), (16, 1304650), (20, 1043720), (25, 834976), (32, 652325), (40, 521860), (50, 417488), (80, 260930), (97, 215200), (100, 208744), (160, 130465), (194, 107600), (200, 104372), (269, 77600), (388, 53800), (400, 52186), (485, 43040), (538, 38800), (776, 26900), (800, 26093), (970, 21520), (1076, 19400), (1345, 15520), (1552, 13450), (1940, 10760), (2152, 9700), (2425, 8608), (2690, 7760), (3104, 6725), (3880, 5380), (4304, 4850)]