19187800

素因数分解:

$2^3\times 5^2\times {\mathrm{197}}^1\times {\mathrm{487}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 44930160

約数和(自身を除く): 25742360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 197, 200, 394, 487, 788, 974, 985, 1576, 1948, 1970, 2435, 3896, 3940, 4870, 4925, 7880, 9740, 9850, 12175, 19480, 19700, 24350, 39400, 48700, 95939, 97400, 191878, 383756, 479695, 767512, 959390, 1918780, 2398475, 3837560, 4796950, 9593900, 19187800]

約数ペア:

[(1, 19187800), (2, 9593900), (4, 4796950), (5, 3837560), (8, 2398475), (10, 1918780), (20, 959390), (25, 767512), (40, 479695), (50, 383756), (100, 191878), (197, 97400), (200, 95939), (394, 48700), (487, 39400), (788, 24350), (974, 19700), (985, 19480), (1576, 12175), (1948, 9850), (1970, 9740), (2435, 7880), (3896, 4925), (3940, 4870)]