21351952

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{167}}^1$

素因数の和:367

約数の個数: 40

約数和(自身を含む): 42622272

約数和(自身を除く): 21270320

約数列:

[1, 2, 4, 8, 16, 61, 122, 131, 167, 244, 262, 334, 488, 524, 668, 976, 1048, 1336, 2096, 2672, 7991, 10187, 15982, 20374, 21877, 31964, 40748, 43754, 63928, 81496, 87508, 127856, 162992, 175016, 350032, 1334497, 2668994, 5337988, 10675976, 21351952]

約数ペア:

[(1, 21351952), (2, 10675976), (4, 5337988), (8, 2668994), (16, 1334497), (61, 350032), (122, 175016), (131, 162992), (167, 127856), (244, 87508), (262, 81496), (334, 63928), (488, 43754), (524, 40748), (668, 31964), (976, 21877), (1048, 20374), (1336, 15982), (2096, 10187), (2672, 7991)]