20692240

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3643}}^1$

素因数の和:3727

約数の個数: 40

約数和(自身を含む): 48800448

約数和(自身を除く): 28108208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3643, 5680, 7286, 14572, 18215, 29144, 36430, 58288, 72860, 145720, 258653, 291440, 517306, 1034612, 1293265, 2069224, 2586530, 4138448, 5173060, 10346120, 20692240]

約数ペア:

[(1, 20692240), (2, 10346120), (4, 5173060), (5, 4138448), (8, 2586530), (10, 2069224), (16, 1293265), (20, 1034612), (40, 517306), (71, 291440), (80, 258653), (142, 145720), (284, 72860), (355, 58288), (568, 36430), (710, 29144), (1136, 18215), (1420, 14572), (2840, 7286), (3643, 5680)]