19181305

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 27377280

約数和(自身を除く): 8195975

約数列:

[1, 5, 11, 13, 55, 65, 139, 143, 193, 695, 715, 965, 1529, 1807, 2123, 2509, 7645, 9035, 10615, 12545, 19877, 26827, 27599, 99385, 134135, 137995, 295097, 348751, 1475485, 1743755, 3836261, 19181305]

約数ペア:

[(1, 19181305), (5, 3836261), (11, 1743755), (13, 1475485), (55, 348751), (65, 295097), (139, 137995), (143, 134135), (193, 99385), (695, 27599), (715, 26827), (965, 19877), (1529, 12545), (1807, 10615), (2123, 9035), (2509, 7645)]