21405736

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{701}}^1$

素因数の和:1065

約数の個数: 32

約数和(自身を含む): 43973280

約数和(自身を除く): 22567544

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 347, 694, 701, 1388, 1402, 2776, 2804, 3817, 5608, 7634, 7711, 15268, 15422, 30536, 30844, 61688, 243247, 486494, 972988, 1945976, 2675717, 5351434, 10702868, 21405736]

約数ペア:

[(1, 21405736), (2, 10702868), (4, 5351434), (8, 2675717), (11, 1945976), (22, 972988), (44, 486494), (88, 243247), (347, 61688), (694, 30844), (701, 30536), (1388, 15422), (1402, 15268), (2776, 7711), (2804, 7634), (3817, 5608)]