19180413

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 35283456

約数和(自身を除く): 16103043

約数列:

[1, 3, 7, 9, 21, 23, 31, 49, 61, 63, 69, 93, 147, 161, 183, 207, 217, 279, 427, 441, 483, 549, 651, 713, 1127, 1281, 1403, 1449, 1519, 1891, 1953, 2139, 2989, 3381, 3843, 4209, 4557, 4991, 5673, 6417, 8967, 9821, 10143, 12627, 13237, 13671, 14973, 17019, 26901, 29463, 34937, 39711, 43493, 44919, 68747, 88389, 92659, 104811, 119133, 130479, 206241, 277977, 304451, 314433, 391437, 618723, 833931, 913353, 2131157, 2740059, 6393471, 19180413]

約数ペア:

[(1, 19180413), (3, 6393471), (7, 2740059), (9, 2131157), (21, 913353), (23, 833931), (31, 618723), (49, 391437), (61, 314433), (63, 304451), (69, 277977), (93, 206241), (147, 130479), (161, 119133), (183, 104811), (207, 92659), (217, 88389), (279, 68747), (427, 44919), (441, 43493), (483, 39711), (549, 34937), (651, 29463), (713, 26901), (1127, 17019), (1281, 14973), (1403, 13671), (1449, 13237), (1519, 12627), (1891, 10143), (1953, 9821), (2139, 8967), (2989, 6417), (3381, 5673), (3843, 4991), (4209, 4557)]