21540164

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{641}}^1$

素因数の和:947

約数の個数: 24

約数和(自身を含む): 39115776

約数和(自身を除く): 17575612

約数列:

[1, 2, 4, 31, 62, 124, 271, 542, 641, 1084, 1282, 2564, 8401, 16802, 19871, 33604, 39742, 79484, 173711, 347422, 694844, 5385041, 10770082, 21540164]

約数ペア:

[(1, 21540164), (2, 10770082), (4, 5385041), (31, 694844), (62, 347422), (124, 173711), (271, 79484), (542, 39742), (641, 33604), (1084, 19871), (1282, 16802), (2564, 8401)]