20272275

素因数分解:

$3^5\times 5^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 38997504

約数和(自身を除く): 18725229

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 71, 75, 81, 135, 141, 213, 225, 235, 243, 355, 405, 423, 639, 675, 705, 1065, 1175, 1215, 1269, 1775, 1917, 2025, 2115, 3195, 3337, 3525, 3807, 5325, 5751, 6075, 6345, 9585, 10011, 10575, 11421, 15975, 16685, 17253, 19035, 28755, 30033, 31725, 47925, 50055, 57105, 83425, 86265, 90099, 95175, 143775, 150165, 250275, 270297, 285525, 431325, 450495, 750825, 810891, 1351485, 2252475, 4054455, 6757425, 20272275]

約数ペア:

[(1, 20272275), (3, 6757425), (5, 4054455), (9, 2252475), (15, 1351485), (25, 810891), (27, 750825), (45, 450495), (47, 431325), (71, 285525), (75, 270297), (81, 250275), (135, 150165), (141, 143775), (213, 95175), (225, 90099), (235, 86265), (243, 83425), (355, 57105), (405, 50055), (423, 47925), (639, 31725), (675, 30033), (705, 28755), (1065, 19035), (1175, 17253), (1215, 16685), (1269, 15975), (1775, 11421), (1917, 10575), (2025, 10011), (2115, 9585), (3195, 6345), (3337, 6075), (3525, 5751), (3807, 5325)]