21983128

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{373}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 20428472

約数列:

[1, 2, 4, 8, 53, 106, 139, 212, 278, 373, 424, 556, 746, 1112, 1492, 2984, 7367, 14734, 19769, 29468, 39538, 51847, 58936, 79076, 103694, 158152, 207388, 414776, 2747891, 5495782, 10991564, 21983128]

約数ペア:

[(1, 21983128), (2, 10991564), (4, 5495782), (8, 2747891), (53, 414776), (106, 207388), (139, 158152), (212, 103694), (278, 79076), (373, 58936), (424, 51847), (556, 39538), (746, 29468), (1112, 19769), (1492, 14734), (2984, 7367)]