21218944

素因数分解:

$2^7\times {\mathrm{97}}^1\times {\mathrm{1709}}^1$

素因数の和:1820

約数の個数: 32

約数和(自身を含む): 42732900

約数和(自身を除く): 21513956

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 388, 776, 1552, 1709, 3104, 3418, 6208, 6836, 12416, 13672, 27344, 54688, 109376, 165773, 218752, 331546, 663092, 1326184, 2652368, 5304736, 10609472, 21218944]

約数ペア:

[(1, 21218944), (2, 10609472), (4, 5304736), (8, 2652368), (16, 1326184), (32, 663092), (64, 331546), (97, 218752), (128, 165773), (194, 109376), (388, 54688), (776, 27344), (1552, 13672), (1709, 12416), (3104, 6836), (3418, 6208)]