21219012

素因数分解:

$2^2\times 3^2\times {\mathrm{647}}^1\times {\mathrm{911}}^1$

素因数の和:1568

約数の個数: 36

約数和(自身を含む): 53778816

約数和(自身を除く): 32559804

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 647, 911, 1294, 1822, 1941, 2588, 2733, 3644, 3882, 5466, 5823, 7764, 8199, 10932, 11646, 16398, 23292, 32796, 589417, 1178834, 1768251, 2357668, 3536502, 5304753, 7073004, 10609506, 21219012]

約数ペア:

[(1, 21219012), (2, 10609506), (3, 7073004), (4, 5304753), (6, 3536502), (9, 2357668), (12, 1768251), (18, 1178834), (36, 589417), (647, 32796), (911, 23292), (1294, 16398), (1822, 11646), (1941, 10932), (2588, 8199), (2733, 7764), (3644, 5823), (3882, 5466)]