197800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 491040

約数和(自身を除く): 293240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 43, 46, 50, 86, 92, 100, 115, 172, 184, 200, 215, 230, 344, 430, 460, 575, 860, 920, 989, 1075, 1150, 1720, 1978, 2150, 2300, 3956, 4300, 4600, 4945, 7912, 8600, 9890, 19780, 24725, 39560, 49450, 98900, 197800]

約数ペア:

[(1, 197800), (2, 98900), (4, 49450), (5, 39560), (8, 24725), (10, 19780), (20, 9890), (23, 8600), (25, 7912), (40, 4945), (43, 4600), (46, 4300), (50, 3956), (86, 2300), (92, 2150), (100, 1978), (115, 1720), (172, 1150), (184, 1075), (200, 989), (215, 920), (230, 860), (344, 575), (430, 460)]