12800120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{3299}}^1$

素因数の和:3407

約数の個数: 32

約数和(自身を含む): 29106000

約数和(自身を除く): 16305880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3299, 3880, 6598, 13196, 16495, 26392, 32990, 65980, 131960, 320003, 640006, 1280012, 1600015, 2560024, 3200030, 6400060, 12800120]

約数ペア:

[(1, 12800120), (2, 6400060), (4, 3200030), (5, 2560024), (8, 1600015), (10, 1280012), (20, 640006), (40, 320003), (97, 131960), (194, 65980), (388, 32990), (485, 26392), (776, 16495), (970, 13196), (1940, 6598), (3299, 3880)]