21171368

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 40656000

約数和(自身を除く): 19484632

約数列:

[1, 2, 4, 8, 79, 139, 158, 241, 278, 316, 482, 556, 632, 964, 1112, 1928, 10981, 19039, 21962, 33499, 38078, 43924, 66998, 76156, 87848, 133996, 152312, 267992, 2646421, 5292842, 10585684, 21171368]

約数ペア:

[(1, 21171368), (2, 10585684), (4, 5292842), (8, 2646421), (79, 267992), (139, 152312), (158, 133996), (241, 87848), (278, 76156), (316, 66998), (482, 43924), (556, 38078), (632, 33499), (964, 21962), (1112, 19039), (1928, 10981)]