128429500

素因数分解:

$2^2\times 5^3\times {\mathrm{397}}^1\times {\mathrm{647}}^1$

素因数の和:1063

約数の個数: 48

約数和(自身を含む): 281631168

約数和(自身を除く): 153201668

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 397, 500, 647, 794, 1294, 1588, 1985, 2588, 3235, 3970, 6470, 7940, 9925, 12940, 16175, 19850, 32350, 39700, 49625, 64700, 80875, 99250, 161750, 198500, 256859, 323500, 513718, 1027436, 1284295, 2568590, 5137180, 6421475, 12842950, 25685900, 32107375, 64214750, 128429500]

約数ペア:

[(1, 128429500), (2, 64214750), (4, 32107375), (5, 25685900), (10, 12842950), (20, 6421475), (25, 5137180), (50, 2568590), (100, 1284295), (125, 1027436), (250, 513718), (397, 323500), (500, 256859), (647, 198500), (794, 161750), (1294, 99250), (1588, 80875), (1985, 64700), (2588, 49625), (3235, 39700), (3970, 32350), (6470, 19850), (7940, 16175), (9925, 12940)]