20709556

素因数分解:

$2^2\times 7^2\times {\mathrm{157}}^1\times {\mathrm{673}}^1$

素因数の和:848

約数の個数: 36

約数和(自身を含む): 42490308

約数和(自身を除く): 21780752

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 157, 196, 314, 628, 673, 1099, 1346, 2198, 2692, 4396, 4711, 7693, 9422, 15386, 18844, 30772, 32977, 65954, 105661, 131908, 211322, 422644, 739627, 1479254, 2958508, 5177389, 10354778, 20709556]

約数ペア:

[(1, 20709556), (2, 10354778), (4, 5177389), (7, 2958508), (14, 1479254), (28, 739627), (49, 422644), (98, 211322), (157, 131908), (196, 105661), (314, 65954), (628, 32977), (673, 30772), (1099, 18844), (1346, 15386), (2198, 9422), (2692, 7693), (4396, 4711)]