21277544

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 19589656

約数列:

[1, 2, 4, 8, 79, 131, 158, 257, 262, 316, 514, 524, 632, 1028, 1048, 2056, 10349, 20303, 20698, 33667, 40606, 41396, 67334, 81212, 82792, 134668, 162424, 269336, 2659693, 5319386, 10638772, 21277544]

約数ペア:

[(1, 21277544), (2, 10638772), (4, 5319386), (8, 2659693), (79, 269336), (131, 162424), (158, 134668), (257, 82792), (262, 81212), (316, 67334), (514, 41396), (524, 40606), (632, 33667), (1028, 20698), (1048, 20303), (2056, 10349)]