16978000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:689

約数の個数: 80

約数和(自身を含む): 44278416

約数和(自身を除く): 27300416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 653, 1000, 1040, 1300, 1306, 1625, 2000, 2600, 2612, 3250, 3265, 5200, 5224, 6500, 6530, 8489, 10448, 13000, 13060, 16325, 16978, 26000, 26120, 32650, 33956, 42445, 52240, 65300, 67912, 81625, 84890, 130600, 135824, 163250, 169780, 212225, 261200, 326500, 339560, 424450, 653000, 679120, 848900, 1061125, 1306000, 1697800, 2122250, 3395600, 4244500, 8489000, 16978000]

約数ペア:

[(1, 16978000), (2, 8489000), (4, 4244500), (5, 3395600), (8, 2122250), (10, 1697800), (13, 1306000), (16, 1061125), (20, 848900), (25, 679120), (26, 653000), (40, 424450), (50, 339560), (52, 326500), (65, 261200), (80, 212225), (100, 169780), (104, 163250), (125, 135824), (130, 130600), (200, 84890), (208, 81625), (250, 67912), (260, 65300), (325, 52240), (400, 42445), (500, 33956), (520, 32650), (650, 26120), (653, 26000), (1000, 16978), (1040, 16325), (1300, 13060), (1306, 13000), (1625, 10448), (2000, 8489), (2600, 6530), (2612, 6500), (3250, 5224), (3265, 5200)]