123380120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{31799}}^1$

素因数の和:31907

約数の個数: 32

約数和(自身を含む): 280476000

約数和(自身を除く): 157095880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 31799, 63598, 127196, 158995, 254392, 317990, 635980, 1271960, 3084503, 6169006, 12338012, 15422515, 24676024, 30845030, 61690060, 123380120]

約数ペア:

[(1, 123380120), (2, 61690060), (4, 30845030), (5, 24676024), (8, 15422515), (10, 12338012), (20, 6169006), (40, 3084503), (97, 1271960), (194, 635980), (388, 317990), (485, 254392), (776, 158995), (970, 127196), (1940, 63598), (3880, 31799)]