20198984950

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{38833}}^1$

素因数の和:39049

約数の個数: 48

約数和(自身を含む): 38311449696

約数和(自身を除く): 18112464746

約数列:

[1, 2, 5, 10, 25, 50, 101, 103, 202, 206, 505, 515, 1010, 1030, 2525, 2575, 5050, 5150, 10403, 20806, 38833, 52015, 77666, 104030, 194165, 260075, 388330, 520150, 970825, 1941650, 3922133, 3999799, 7844266, 7999598, 19610665, 19998995, 39221330, 39997990, 98053325, 99994975, 196106650, 199989950, 403979699, 807959398, 2019898495, 4039796990, 10099492475, 20198984950]

約数ペア:

[(1, 20198984950), (2, 10099492475), (5, 4039796990), (10, 2019898495), (25, 807959398), (50, 403979699), (101, 199989950), (103, 196106650), (202, 99994975), (206, 98053325), (505, 39997990), (515, 39221330), (1010, 19998995), (1030, 19610665), (2525, 7999598), (2575, 7844266), (5050, 3999799), (5150, 3922133), (10403, 1941650), (20806, 970825), (38833, 520150), (52015, 388330), (77666, 260075), (104030, 194165)]