16991500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1999}}^1$

素因数の和:2035

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 22320500

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 170, 250, 340, 425, 500, 850, 1700, 1999, 2125, 3998, 4250, 7996, 8500, 9995, 19990, 33983, 39980, 49975, 67966, 99950, 135932, 169915, 199900, 249875, 339830, 499750, 679660, 849575, 999500, 1699150, 3398300, 4247875, 8495750, 16991500]

約数ペア:

[(1, 16991500), (2, 8495750), (4, 4247875), (5, 3398300), (10, 1699150), (17, 999500), (20, 849575), (25, 679660), (34, 499750), (50, 339830), (68, 249875), (85, 199900), (100, 169915), (125, 135932), (170, 99950), (250, 67966), (340, 49975), (425, 39980), (500, 33983), (850, 19990), (1700, 9995), (1999, 8500), (2125, 7996), (3998, 4250)]