78878000

素因数分解:

$2^4\times 5^3\times {\mathrm{39439}}^1$

素因数の和:39462

約数の個数: 40

約数和(自身を含む): 190731840

約数和(自身を除く): 111853840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 39439, 78878, 157756, 197195, 315512, 394390, 631024, 788780, 985975, 1577560, 1971950, 3155120, 3943900, 4929875, 7887800, 9859750, 15775600, 19719500, 39439000, 78878000]

約数ペア:

[(1, 78878000), (2, 39439000), (4, 19719500), (5, 15775600), (8, 9859750), (10, 7887800), (16, 4929875), (20, 3943900), (25, 3155120), (40, 1971950), (50, 1577560), (80, 985975), (100, 788780), (125, 631024), (200, 394390), (250, 315512), (400, 197195), (500, 157756), (1000, 78878), (2000, 39439)]