21797000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30094840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 307, 355, 500, 568, 614, 710, 1000, 1228, 1420, 1535, 1775, 2456, 2840, 3070, 3550, 6140, 7100, 7675, 8875, 12280, 14200, 15350, 17750, 21797, 30700, 35500, 38375, 43594, 61400, 71000, 76750, 87188, 108985, 153500, 174376, 217970, 307000, 435940, 544925, 871880, 1089850, 2179700, 2724625, 4359400, 5449250, 10898500, 21797000]

約数ペア:

[(1, 21797000), (2, 10898500), (4, 5449250), (5, 4359400), (8, 2724625), (10, 2179700), (20, 1089850), (25, 871880), (40, 544925), (50, 435940), (71, 307000), (100, 217970), (125, 174376), (142, 153500), (200, 108985), (250, 87188), (284, 76750), (307, 71000), (355, 61400), (500, 43594), (568, 38375), (614, 35500), (710, 30700), (1000, 21797), (1228, 17750), (1420, 15350), (1535, 14200), (1775, 12280), (2456, 8875), (2840, 7675), (3070, 7100), (3550, 6140)]