18247000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:349

約数の個数: 64

約数和(自身を含む): 43467840

約数和(自身を除く): 25220840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 257, 284, 355, 500, 514, 568, 710, 1000, 1028, 1285, 1420, 1775, 2056, 2570, 2840, 3550, 5140, 6425, 7100, 8875, 10280, 12850, 14200, 17750, 18247, 25700, 32125, 35500, 36494, 51400, 64250, 71000, 72988, 91235, 128500, 145976, 182470, 257000, 364940, 456175, 729880, 912350, 1824700, 2280875, 3649400, 4561750, 9123500, 18247000]

約数ペア:

[(1, 18247000), (2, 9123500), (4, 4561750), (5, 3649400), (8, 2280875), (10, 1824700), (20, 912350), (25, 729880), (40, 456175), (50, 364940), (71, 257000), (100, 182470), (125, 145976), (142, 128500), (200, 91235), (250, 72988), (257, 71000), (284, 64250), (355, 51400), (500, 36494), (514, 35500), (568, 32125), (710, 25700), (1000, 18247), (1028, 17750), (1285, 14200), (1420, 12850), (1775, 10280), (2056, 8875), (2570, 7100), (2840, 6425), (3550, 5140)]