21255736

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20921}}^1$

素因数の和:21054

約数の個数: 16

約数和(自身を含む): 40170240

約数和(自身を除く): 18914504

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20921, 41842, 83684, 167368, 2656967, 5313934, 10627868, 21255736]

約数ペア:

[(1, 21255736), (2, 10627868), (4, 5313934), (8, 2656967), (127, 167368), (254, 83684), (508, 41842), (1016, 20921)]