8904400

素因数分解:

$2^4\times 5^2\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:328

約数の個数: 60

約数和(自身を含む): 21691692

約数和(自身を除く): 12787292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 113, 197, 200, 226, 394, 400, 452, 565, 788, 904, 985, 1130, 1576, 1808, 1970, 2260, 2825, 3152, 3940, 4520, 4925, 5650, 7880, 9040, 9850, 11300, 15760, 19700, 22261, 22600, 39400, 44522, 45200, 78800, 89044, 111305, 178088, 222610, 356176, 445220, 556525, 890440, 1113050, 1780880, 2226100, 4452200, 8904400]

約数ペア:

[(1, 8904400), (2, 4452200), (4, 2226100), (5, 1780880), (8, 1113050), (10, 890440), (16, 556525), (20, 445220), (25, 356176), (40, 222610), (50, 178088), (80, 111305), (100, 89044), (113, 78800), (197, 45200), (200, 44522), (226, 39400), (394, 22600), (400, 22261), (452, 19700), (565, 15760), (788, 11300), (904, 9850), (985, 9040), (1130, 7880), (1576, 5650), (1808, 4925), (1970, 4520), (2260, 3940), (2825, 3152)]