19913085

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 16411203

約数列:

[1, 3, 5, 9, 15, 41, 43, 45, 123, 129, 205, 215, 251, 369, 387, 615, 645, 753, 1255, 1763, 1845, 1935, 2259, 3765, 5289, 8815, 10291, 10793, 11295, 15867, 26445, 30873, 32379, 51455, 53965, 79335, 92619, 97137, 154365, 161895, 442513, 463095, 485685, 1327539, 2212565, 3982617, 6637695, 19913085]

約数ペア:

[(1, 19913085), (3, 6637695), (5, 3982617), (9, 2212565), (15, 1327539), (41, 485685), (43, 463095), (45, 442513), (123, 161895), (129, 154365), (205, 97137), (215, 92619), (251, 79335), (369, 53965), (387, 51455), (615, 32379), (645, 30873), (753, 26445), (1255, 15867), (1763, 11295), (1845, 10793), (1935, 10291), (2259, 8815), (3765, 5289)]