19803900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 57746304

約数和(自身を除く): 37942404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 251, 263, 300, 502, 526, 753, 789, 1004, 1052, 1255, 1315, 1506, 1578, 2510, 2630, 3012, 3156, 3765, 3945, 5020, 5260, 6275, 6575, 7530, 7890, 12550, 13150, 15060, 15780, 18825, 19725, 25100, 26300, 37650, 39450, 66013, 75300, 78900, 132026, 198039, 264052, 330065, 396078, 660130, 792156, 990195, 1320260, 1650325, 1980390, 3300650, 3960780, 4950975, 6601300, 9901950, 19803900]

約数ペア:

[(1, 19803900), (2, 9901950), (3, 6601300), (4, 4950975), (5, 3960780), (6, 3300650), (10, 1980390), (12, 1650325), (15, 1320260), (20, 990195), (25, 792156), (30, 660130), (50, 396078), (60, 330065), (75, 264052), (100, 198039), (150, 132026), (251, 78900), (263, 75300), (300, 66013), (502, 39450), (526, 37650), (753, 26300), (789, 25100), (1004, 19725), (1052, 18825), (1255, 15780), (1315, 15060), (1506, 13150), (1578, 12550), (2510, 7890), (2630, 7530), (3012, 6575), (3156, 6275), (3765, 5260), (3945, 5020)]