19930515

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 35750400

約数和(自身を除く): 15819885

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 121, 139, 165, 237, 363, 395, 417, 605, 695, 869, 1185, 1529, 1815, 2085, 2607, 4345, 4587, 7645, 9559, 10981, 13035, 16819, 22935, 28677, 32943, 47795, 50457, 54905, 84095, 120791, 143385, 164715, 252285, 362373, 603955, 1328701, 1811865, 3986103, 6643505, 19930515]

約数ペア:

[(1, 19930515), (3, 6643505), (5, 3986103), (11, 1811865), (15, 1328701), (33, 603955), (55, 362373), (79, 252285), (121, 164715), (139, 143385), (165, 120791), (237, 84095), (363, 54905), (395, 50457), (417, 47795), (605, 32943), (695, 28677), (869, 22935), (1185, 16819), (1529, 13035), (1815, 10981), (2085, 9559), (2607, 7645), (4345, 4587)]