409400

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:128

約数の個数: 48

約数和(自身を含む): 1004400

約数和(自身を除く): 595000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 89, 92, 100, 115, 178, 184, 200, 230, 356, 445, 460, 575, 712, 890, 920, 1150, 1780, 2047, 2225, 2300, 3560, 4094, 4450, 4600, 8188, 8900, 10235, 16376, 17800, 20470, 40940, 51175, 81880, 102350, 204700, 409400]

約数ペア:

[(1, 409400), (2, 204700), (4, 102350), (5, 81880), (8, 51175), (10, 40940), (20, 20470), (23, 17800), (25, 16376), (40, 10235), (46, 8900), (50, 8188), (89, 4600), (92, 4450), (100, 4094), (115, 3560), (178, 2300), (184, 2225), (200, 2047), (230, 1780), (356, 1150), (445, 920), (460, 890), (575, 712)]