261648398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1\times {\mathrm{809}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 437516640

約数和(自身を除く): 175868242

約数列:

[1, 2, 11, 22, 61, 122, 241, 482, 671, 809, 1342, 1618, 2651, 5302, 8899, 14701, 17798, 29402, 49349, 98698, 161711, 194969, 323422, 389938, 542839, 1085678, 2144659, 4289318, 11893109, 23786218, 130824199, 261648398]

約数ペア:

[(1, 261648398), (2, 130824199), (11, 23786218), (22, 11893109), (61, 4289318), (122, 2144659), (241, 1085678), (482, 542839), (671, 389938), (809, 323422), (1342, 194969), (1618, 161711), (2651, 98698), (5302, 49349), (8899, 29402), (14701, 17798)]