18939350

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{383}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 37711872

約数和(自身を除く): 18772522

約数列:

[1, 2, 5, 10, 23, 25, 43, 46, 50, 86, 115, 215, 230, 383, 430, 575, 766, 989, 1075, 1150, 1915, 1978, 2150, 3830, 4945, 8809, 9575, 9890, 16469, 17618, 19150, 24725, 32938, 44045, 49450, 82345, 88090, 164690, 220225, 378787, 411725, 440450, 757574, 823450, 1893935, 3787870, 9469675, 18939350]

約数ペア:

[(1, 18939350), (2, 9469675), (5, 3787870), (10, 1893935), (23, 823450), (25, 757574), (43, 440450), (46, 411725), (50, 378787), (86, 220225), (115, 164690), (215, 88090), (230, 82345), (383, 49450), (430, 44045), (575, 32938), (766, 24725), (989, 19150), (1075, 17618), (1150, 16469), (1915, 9890), (1978, 9575), (2150, 8809), (3830, 4945)]