19389560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11273}}^1$

素因数の和:11327

約数の個数: 32

約数和(自身を含む): 44645040

約数和(自身を除く): 25255480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11273, 22546, 45092, 56365, 90184, 112730, 225460, 450920, 484739, 969478, 1938956, 2423695, 3877912, 4847390, 9694780, 19389560]

約数ペア:

[(1, 19389560), (2, 9694780), (4, 4847390), (5, 3877912), (8, 2423695), (10, 1938956), (20, 969478), (40, 484739), (43, 450920), (86, 225460), (172, 112730), (215, 90184), (344, 56365), (430, 45092), (860, 22546), (1720, 11273)]