2169820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 4898880

約数和(自身を除く): 2729060

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 53, 89, 92, 106, 115, 178, 212, 230, 265, 356, 445, 460, 530, 890, 1060, 1219, 1780, 2047, 2438, 4094, 4717, 4876, 6095, 8188, 9434, 10235, 12190, 18868, 20470, 23585, 24380, 40940, 47170, 94340, 108491, 216982, 433964, 542455, 1084910, 2169820]

約数ペア:

[(1, 2169820), (2, 1084910), (4, 542455), (5, 433964), (10, 216982), (20, 108491), (23, 94340), (46, 47170), (53, 40940), (89, 24380), (92, 23585), (106, 20470), (115, 18868), (178, 12190), (212, 10235), (230, 9434), (265, 8188), (356, 6095), (445, 4876), (460, 4717), (530, 4094), (890, 2438), (1060, 2047), (1219, 1780)]