21228256

素因数分解:

$2^5\times 7^1\times {\mathrm{97}}^1\times {\mathrm{977}}^1$

素因数の和:1091

約数の個数: 48

約数和(自身を含む): 48305376

約数和(自身を除く): 27077120

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 97, 112, 194, 224, 388, 679, 776, 977, 1358, 1552, 1954, 2716, 3104, 3908, 5432, 6839, 7816, 10864, 13678, 15632, 21728, 27356, 31264, 54712, 94769, 109424, 189538, 218848, 379076, 663383, 758152, 1326766, 1516304, 2653532, 3032608, 5307064, 10614128, 21228256]

約数ペア:

[(1, 21228256), (2, 10614128), (4, 5307064), (7, 3032608), (8, 2653532), (14, 1516304), (16, 1326766), (28, 758152), (32, 663383), (56, 379076), (97, 218848), (112, 189538), (194, 109424), (224, 94769), (388, 54712), (679, 31264), (776, 27356), (977, 21728), (1358, 15632), (1552, 13678), (1954, 10864), (2716, 7816), (3104, 6839), (3908, 5432)]