18444400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3547}}^1$

素因数の和:3578

約数の個数: 60

約数和(自身を含む): 47734792

約数和(自身を除く): 29290392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3547, 5200, 7094, 14188, 17735, 28376, 35470, 46111, 56752, 70940, 88675, 92222, 141880, 177350, 184444, 230555, 283760, 354700, 368888, 461110, 709400, 737776, 922220, 1152775, 1418800, 1844440, 2305550, 3688880, 4611100, 9222200, 18444400]

約数ペア:

[(1, 18444400), (2, 9222200), (4, 4611100), (5, 3688880), (8, 2305550), (10, 1844440), (13, 1418800), (16, 1152775), (20, 922220), (25, 737776), (26, 709400), (40, 461110), (50, 368888), (52, 354700), (65, 283760), (80, 230555), (100, 184444), (104, 177350), (130, 141880), (200, 92222), (208, 88675), (260, 70940), (325, 56752), (400, 46111), (520, 35470), (650, 28376), (1040, 17735), (1300, 14188), (2600, 7094), (3547, 5200)]