155565555

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 273518208

約数和(自身を除く): 117952653

約数列:

[1, 3, 5, 15, 17, 51, 61, 73, 85, 137, 183, 219, 255, 305, 365, 411, 685, 915, 1037, 1095, 1241, 2055, 2329, 3111, 3723, 4453, 5185, 6205, 6987, 8357, 10001, 11645, 13359, 15555, 18615, 22265, 25071, 30003, 34935, 41785, 50005, 66795, 75701, 125355, 142069, 150015, 170017, 227103, 378505, 426207, 510051, 610061, 710345, 850085, 1135515, 1830183, 2131035, 2550255, 3050305, 9150915, 10371037, 31113111, 51855185, 155565555]

約数ペア:

[(1, 155565555), (3, 51855185), (5, 31113111), (15, 10371037), (17, 9150915), (51, 3050305), (61, 2550255), (73, 2131035), (85, 1830183), (137, 1135515), (183, 850085), (219, 710345), (255, 610061), (305, 510051), (365, 426207), (411, 378505), (685, 227103), (915, 170017), (1037, 150015), (1095, 142069), (1241, 125355), (2055, 75701), (2329, 66795), (3111, 50005), (3723, 41785), (4453, 34935), (5185, 30003), (6205, 25071), (6987, 22265), (8357, 18615), (10001, 15555), (11645, 13359)]